WO2017011946A1 - 基于不等差错保护的数据传输方法、装置和设备 - Google Patents

基于不等差错保护的数据传输方法、装置和设备 Download PDF

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WO2017011946A1
WO2017011946A1 PCT/CN2015/084374 CN2015084374W WO2017011946A1 WO 2017011946 A1 WO2017011946 A1 WO 2017011946A1 CN 2015084374 W CN2015084374 W CN 2015084374W WO 2017011946 A1 WO2017011946 A1 WO 2017011946A1
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code block
data
bit
concatenated
code
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PCT/CN2015/084374
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English (en)
French (fr)
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王浩
孙海云
蔺同宇
望育梅
田春长
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华为技术有限公司
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Priority to CN201580080394.9A priority Critical patent/CN107615691B/zh
Priority to PCT/CN2015/084374 priority patent/WO2017011946A1/zh
Priority to EP15898502.8A priority patent/EP3306844B1/en
Publication of WO2017011946A1 publication Critical patent/WO2017011946A1/zh
Priority to US15/864,201 priority patent/US20180198554A1/en

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    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
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    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/258—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with turbo codes, e.g. Turbo Trellis Coded Modulation [TTCM]
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    • H03M13/2703—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques the interleaver involving at least two directions
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    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
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Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission method, apparatus, and device based on unequal error protection.
  • the video data has the feature of generating a data stream in which the degree of influence on the decoding of the video data is inconsistent in the video encoding process. Therefore, how to encode different importance of video data to effectively protect data is a very important issue.
  • the video data is prioritized, and after the video data is divided into different queues according to different priorities, the queue is sent to the convolutional encoder, and then convolved.
  • the encoder sends the queue to the comb filter.
  • the high priority data bit is placed at the position of the Most Significant Bit (MSB) of the modulation symbol according to the greedy algorithm.
  • the low priority data bits are placed at the position of the Least Significant Bit (LSB) of the modulation symbol, so that the data can be effectively protected.
  • MSB Most Significant Bit
  • LSB Least Significant Bit
  • the channel coding method used in the prior art is a convolutional code, and the video data needs to be classified into different queues according to importance before entering the encoder.
  • LTE Long Term Evolution
  • Turbo coding is used.
  • video data cannot distinguish importance. Therefore, the existing video data protection mode is not applicable to the LTE system.
  • the embodiment of the invention provides a data transmission method, device and device based on unequal error protection, so as to realize unequal error protection of video data in the LTE system.
  • an embodiment of the present invention provides a data transmission method based on unequal error protection, including:
  • the segmenting the code block corresponding to the data according to the number of symbols in the constellation including:
  • the code block is segmented according to the number of segments.
  • the determining the number of segments according to the number of bits Q m in the constellation diagram includes:
  • the number of segments C' is determined, where Z represents the maximum value of the code block size, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit.
  • the output code block is leveld according to a number of symbol bits in the constellation diagram Union, including:
  • Each Q m /2 of the output code blocks is used as a code block group, and the output code blocks in each code block group are sorted according to the importance of the data;
  • each code block group For each code block group, one bit is sequentially acquired from each of the sorted output code blocks, and the obtained bits are cascaded, and this operation is repeated until the Q m bits are cascaded.
  • the segmented code block performs rate matching, including:
  • the cascading code Block transmission To the terminal equipment including:
  • the analog data is transmitted to the terminal device.
  • an embodiment of the present invention provides a data transmission method based on unequal error protection, including:
  • the segmenting the code block corresponding to the data according to the preset parameter includes:
  • the padding bit is a bit used when bit-filling the code block
  • the code block is bit-filled according to the number of segments, the length of the segmented code block, and the number of the first padding bits to segment the code block.
  • the performing according to the number of symbol bits in the constellation, performing interleaving processing on the system bit code block, including :
  • padding bits and information bits are respectively placed according to the number of the second padding bits and the number of symbols in the constellation; the information bits are bits corresponding to the data.
  • an embodiment of the present invention provides a data transmission method based on unequal error protection, including:
  • the concatenated code block is to segment the code block corresponding to the data according to the number of symbols in the constellation diagram, and perform rate matching on the channel coded segmented code block. , Obtaining an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation diagram;
  • the coded concatenation of the channel coded split code blocks is performed to obtain the data.
  • the performing code block splitting on the concatenated code block according to the number of symbol bits in the constellation diagram includes:
  • Each Q m /2 bits in the concatenated code block is taken as one bit group, and one bit is sequentially acquired from each bit group, and the acquired bits are grouped into a bit stream.
  • the performing code block cascading on the channel coded split code block includes:
  • an embodiment of the present invention provides a data transmission method based on unequal error protection, including:
  • the concatenated code block is to segment the code block corresponding to the data according to a preset parameter, and performing coding processing on the obtained segment code block to obtain an encoded code block, where the coding
  • the code block includes a system bit code block, and the system bit code block is interleaved according to the number of symbol bits in the constellation diagram, the interleaved code block is obtained, and the interleaved code block is concatenated;
  • the performing LTE data receiving processing on the concatenated code block includes:
  • the decoded code block is verified to obtain a check code block.
  • an embodiment of the present invention provides a data transmission apparatus based on unequal error protection.
  • a segmentation module configured to segment the code block corresponding to the data according to the number of symbols in the constellation diagram to obtain the segmentation code block
  • a matching module configured to perform rate matching on the channel coded segment code block to obtain an output code block
  • a cascading module configured to cascode the output code blocks according to the number of symbols in the constellation diagram to obtain a cascading code block
  • a sending module configured to send the concatenated code block to the terminal device.
  • the segmentation module includes:
  • a determining unit configured to determine a number of segments according to a symbol bit number Q m in the constellation diagram; the number of segments is an integer multiple of Q m /2;
  • a segmentation unit configured to segment the code block according to the number of segments.
  • the determining unit is specifically configured to:
  • the number of segments C' is determined, where Z represents the maximum value of the code block size, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit.
  • the cascading module includes:
  • a sorting unit configured to use each Q m /2 of the output code blocks as one code block group, and sort the output code blocks in each code block group according to the importance of the data
  • an obtaining unit for each code block group, sequentially acquiring one bit from each of the sorted output code blocks, and cascading the obtained bits, and repeating the operation until the Q m bits are cascaded.
  • the matching module includes:
  • a coding unit configured to encode the segmented code block to obtain an encoded code block
  • An interleaving unit configured to perform interleaving processing on the coded code block by using an interleaver to obtain an interleaving code Piece;
  • a matching unit configured to perform rate matching on the interleaved code block to obtain the output code block.
  • the device further includes:
  • a modulation module configured to perform data modulation on the concatenated code block to obtain modulated data
  • a conversion module configured to perform digital-to-analog conversion on the modulated data to obtain analog data
  • the sending module is further configured to send the analog data to the terminal device.
  • an embodiment of the present invention provides a data transmission apparatus based on unequal error protection, including:
  • a segmentation module configured to segment the code block corresponding to the data according to the preset parameter to obtain the segment code block
  • An encoding module configured to perform coding processing on the segmented code block to obtain a coded code block, where the coded code block includes a system bit code block;
  • An interleaving module configured to perform interleaving processing on the system bit code block according to a number of symbol bits in the constellation diagram to obtain an interleaved code block;
  • a cascading module configured to cascade the interleaved code blocks to obtain a cascading code block
  • a sending module configured to send the concatenated code block to the terminal device.
  • the segmentation module includes:
  • a first determining unit configured to determine, according to the preset parameter, a number of segments, a segmented code block length, and a first number of padding bits; the padding bit is a bit used when performing bit filling on the code block;
  • a padding unit configured to bit-fill the code block according to the number of segments, the length of the segment code block, and the number of the first padding bits to segment the code block.
  • the interleaving module includes:
  • a second determining unit configured to determine a row number of the interleaver according to the number of symbols in the constellation diagram, and determine a second padding according to the number of rows of the interleaver and the preset number of columns of the interleaver The number of bits;
  • a placing unit configured to respectively place padding bits and information bits according to the number of the second padding bits and the number of symbol bits in the constellation; the information bits are bits corresponding to the data.
  • an embodiment of the present invention provides a data transmission apparatus based on unequal error protection, including:
  • a receiving module configured to receive a concatenated code block sent by the base station; the concatenated code block is to segment the code block corresponding to the data according to the number of symbols in the constellation, and segment the channel coded Performing rate matching on the code block to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation diagram;
  • a splitting module configured to perform code block splitting on the concatenated code block according to a number of symbol bits in the constellation diagram to obtain a split code block
  • a cascading module configured to perform code block cascading on the channel coded split code block to obtain the data.
  • the splitting module is specifically configured to use each Q m /2 bits in the concatenated code block as a bit group, and in turn One bit is taken from each bit group, and the acquired bits are grouped into a bit stream.
  • the cascading module includes:
  • a deinterleaving unit configured to perform deinterleaving processing on the split code block by using a deinterleaver to obtain a deinterleaved code block
  • a decoding unit configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block
  • a processing unit configured to perform CRC check and code block concatenation processing on the decoded code block in sequence to obtain the data.
  • an embodiment of the present invention provides a data transmission apparatus based on unequal error protection, including:
  • a receiving module configured to receive a concatenated code block sent by the base station; the concatenated code block segments the code block corresponding to the data according to a preset parameter, and performs coding processing on the obtained segment code block to obtain an encoding code.
  • Block, the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram to obtain an interleaved code block, and the interleaved code block is cascaded to obtain of;
  • a processing module configured to perform LTE data receiving processing on the concatenated code block, to obtain a check code block
  • a cascading module configured to cascade the code blocks listed by the check code block to obtain a cascading code block.
  • the processing module includes:
  • a splitting unit configured to perform code block splitting on the concatenated code block to obtain a split code block
  • a deinterleaving unit configured to perform deinterleaving processing on the split code block to obtain a deinterleaved code block
  • a decoding unit configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block
  • a verification unit configured to perform verification on the decoded code block to obtain a check code block.
  • a ninth aspect, the embodiment of the present invention provides a base station, including:
  • a processor configured to segment the code block corresponding to the data according to the number of symbols in the constellation diagram to obtain a segment code block
  • the processor is further configured to perform rate matching on the channel coded segment code block to obtain an output code block.
  • the processor is further configured to cascade the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block;
  • a transmitter configured to send the concatenated code block to the terminal device.
  • the processor is further configured to determine a number of segments according to a symbol bit number Q m in the constellation diagram; Is an integer multiple of Q m /2;
  • the processor is further configured to segment the code block according to the number of segments.
  • the processor is further used according to a formula
  • the number of segments C' is determined, where Z represents the maximum value of the code block size, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit.
  • the processor is further configured to use the output code every Q m /2 As a block group, the block sorts the output code blocks in each code block group according to the importance of the data;
  • the processor is further configured to sequentially acquire one bit from each of the sorted output code blocks for each code block group, and cascade the obtained bits, and repeat the operation until Q m bits are used. cascade.
  • the processor is further configured to: encode the segment code block to obtain a coded code block;
  • the processor is further configured to perform interleaving processing on the coded code block by using an interleaver to obtain an interleaved code block;
  • the processor is further configured to perform rate matching on the interleaved code block to obtain the output code block.
  • the processor is further used Performing data modulation on the concatenated code block to obtain modulated data;
  • the processor is further configured to perform digital-to-analog conversion on the modulated data to obtain analog data;
  • the transmitter is further configured to send the analog data to the terminal device.
  • the tenth aspect of the present invention provides a base station, including:
  • a processor configured to segment the code block corresponding to the data according to a preset parameter, to obtain a segment code block
  • the processor is further configured to perform coding processing on the segmentation code block to obtain a coded code block, where the coded code block includes a system bit code block;
  • the processor is further configured to perform interleaving processing on the system bit code block according to a number of symbol bits in the constellation diagram to obtain an interleaved code block;
  • the processor is further configured to cascade the interleaved code blocks to obtain a concatenated code block;
  • a transmitter configured to send the concatenated code block to the terminal device.
  • the processor is further configured to determine, according to the preset parameter, a number of segments, a segment code block length, and a first padding bit number;
  • the padding bit is a bit used when bit filling the code block;
  • the processor is further configured to perform bit filling on the code block according to the number of segments, the length of the segment code block, and the number of the first padding bits to segment the code block.
  • the processor is further configured to determine an interleaver according to the number of symbols in the constellation diagram The number of rows, and determining the number of second padding bits according to the number of rows of the interleaver and the preset number of columns of the interleaver;
  • the processor is further configured to respectively place padding bits and information bits according to the number of the second padding bits and the number of symbol bits in the constellation diagram; the information bits are bits corresponding to the data.
  • an embodiment of the present invention provides a terminal device, including:
  • a receiver configured to receive a concatenated code block sent by the base station; the concatenated code block is to segment the code block corresponding to the data according to the number of symbols in the constellation, and segment the channel coded Performing rate matching on the code block to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation diagram;
  • a processor configured to perform code block splitting on the concatenated code block according to a number of symbol bits in the constellation diagram, to obtain a split code block
  • the processor is further configured to perform code block concatenation on the channel coded split code block to obtain the data.
  • the processor is further configured to use, as a bit group, each Q m /2 bits in the concatenated code block. And sequentially acquiring one bit from each bit group, and composing the acquired bits into a bit stream.
  • the processor is further configured to pass the split code block Deinterleaver performs deinterleaving processing to obtain a deinterleaved code block;
  • the processor is further configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block;
  • the processor is further configured to perform CRC check and code block concatenation processing on the decoded code block in sequence to obtain the data.
  • the embodiment of the present invention provides a terminal device, including:
  • a receiver configured to receive a concatenated code block sent by the base station; the concatenated code block segments the code block corresponding to the data according to a preset parameter, and performs encoding processing on the obtained segment code block to obtain an encoded code.
  • Block the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram to obtain an interleaved code block, and the interleaved code block is cascaded to obtain of;
  • a processor configured to perform LTE data receiving processing on the concatenated code block, to obtain a check code block
  • the processor is further configured to cascade the code blocks listed by the check code block to obtain a concatenated code block.
  • the processor is further configured to perform code block splitting on the concatenated code block to obtain a split code block;
  • the processor is further configured to perform deinterleaving processing on the split code block to obtain a deinterleaved code block;
  • the processor is further configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block;
  • the processor is further configured to perform verification on the decoded code block to obtain a check code block.
  • the data transmission method, device and device based on unequal error protection obtained by the embodiments of the present invention obtain a segment code block by segmenting a code block corresponding to the data according to the number of symbols in the constellation diagram, and coding the channel code
  • the segmented code block performs rate matching, obtains an output code block, and cascades the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block, and sends the concatenated code block to the terminal device. Since the base station performs segmentation and concatenation processing on the code block according to the number of symbols in the constellation diagram, the important data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can be achieved in the LTE system. The purpose of equal error protection.
  • FIG. 1 is a schematic structural diagram of an application scenario of a data transmission method based on unequal error protection according to the present invention
  • Embodiment 1 of a data transmission method based on unequal error protection according to the present invention
  • Embodiment 3 is a schematic flowchart of Embodiment 2 of a data transmission method based on unequal error protection according to the present invention
  • FIG. 5 is a rate matching process in an LTE network
  • FIG. 6 is a schematic diagram of a code block cascading process
  • Embodiment 7 is a schematic flowchart of Embodiment 3 of a data transmission method based on unequal error protection according to the present invention.
  • Embodiment 8 is a schematic flowchart of Embodiment 4 of a data transmission method based on unequal error protection according to the present invention.
  • Embodiment 9 is a schematic flowchart of Embodiment 5 of a data transmission method based on unequal error protection according to the present invention.
  • FIG. 10 is a schematic flowchart of Embodiment 6 of a data transmission method based on unequal error protection according to the present invention.
  • Figure 11 is a schematic diagram of segmentation processing
  • Figure 12 is a schematic diagram of an interleaving process
  • Embodiment 7 of a data transmission method based on unequal error protection according to the present invention
  • Embodiment 14 is a schematic structural diagram of Embodiment 1 of a data transmission apparatus based on unequal error protection according to the present invention
  • Embodiment 15 is a schematic structural diagram of Embodiment 2 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 3 of a data transmission apparatus based on unequal error protection according to the present invention
  • Embodiment 4 of a data transmission apparatus based on unequal error protection according to the present invention is a schematic structural diagram of Embodiment 4 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 5 of a data transmission apparatus based on unequal error protection according to the present invention
  • Embodiment 6 of a data transmission apparatus based on unequal error protection according to the present invention is a schematic structural diagram of Embodiment 6 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 7 of a data transmission apparatus based on unequal error protection according to the present invention
  • FIG. 21 is a schematic structural diagram of Embodiment 8 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 9 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 23 is a schematic structural diagram of Embodiment 10 of a data transmission apparatus based on unequal error protection according to the present invention.
  • Embodiment 1 of a base station is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 25 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • FIG. 26 is a schematic structural diagram of Embodiment 1 of a terminal device according to the present invention.
  • FIG. 27 is a schematic structural diagram of Embodiment 2 of a terminal device according to the present invention.
  • the data transmission method based on unequal error protection is applied to an LTE mobile communication system, and is specifically applied to LTE.
  • the system includes a base station 11 and a terminal device 12, wherein the base station 11 is mainly used for transmitting downlink data of a Physical Downlink Shared Channel (PDSCH); 12 includes a mobile phone, a smart terminal, a multimedia device, a streaming media device, etc., which is responsible for decoding the received encoded signal to obtain a reconstructed signal that matches it.
  • PDSCH Physical Downlink Shared Channel
  • FIG. 2 is a schematic flowchart diagram of Embodiment 1 of a data transmission method based on unequal error protection according to the present invention.
  • the embodiment of the present invention provides a data transmission method based on unequal error protection, which may be performed by any device that performs a data transmission method based on unequal error protection, and the device may be implemented by software and/or hardware. In this embodiment, the device can be integrated in the base station.
  • the method in this embodiment may include:
  • Step 201 Segment the code block corresponding to the data according to the number of symbols in the constellation diagram to obtain a segment code block.
  • the base station when the base station receives the message sent by the terminal device for requesting to receive the video data, the base station encapsulates the SVC video source data in units of bytes, that is, media access control (referred to as Media Access Control; :MAC) Protocol Data Unit (PDU) format is processed.
  • Media Access Control referred to as Media Access Control; :MAC
  • PDU Protocol Data Unit
  • an L-bit check bit is first added at the end of the MAC PDU to verify whether the MAC PDU is correct, for example. : You can use the CRC check method to add a 24-bit check digit to the end of the MAC PDU. After adding the check digit, if the length of the MAC PDU is greater than the maximum value of the block size of 6144, you need to use the sign bit in the constellation.
  • the code block corresponding to the data is segmented according to the number of segments, and a Cyclic Redundancy Check (CRC) redundancy is performed for each segmented code block. I added.
  • Step 202 Perform rate matching on the channel coded segment code block to obtain an output code block.
  • the base station segments the code block, and after obtaining the segment code block, the segment code block is encoded.
  • the Turbo coding mode is generally adopted, and after the coding, one system bit is obtained.
  • a code block and two check bit code blocks and respectively interleaving and bit collecting processing by the three interleave blocks to synthesize the three blocks of code blocks into one way, and then performing rate matching on the one block of code blocks, Get the output code block.
  • Step 203 Cascade the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block.
  • the obtained output code blocks are spliced according to the number of symbols in the constellation diagram, to complete the cascading of the code blocks, and the cascading code blocks are obtained.
  • Step 204 Send the concatenated code block to the terminal device.
  • the base station sends the concatenated code block to the terminal device, so that the terminal device performs code block splitting and decoding processing on the concatenated code block to obtain a MAC PDU data packet.
  • the data transmission method based on unequal error protection obtained by the embodiment of the present invention obtains a segment code block by segmenting the code block corresponding to the data according to the number of symbols in the constellation diagram, and the segment code code of the channel coding
  • the block performs rate matching, obtains an output code block, and cascades the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block, and sends the concatenated code block to the terminal device. Since the base station segments and cascades the code blocks according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation, so that the LTE system can also achieve The purpose of data unequal error protection.
  • FIG. 3 is a schematic flowchart of Embodiment 2 of a data transmission method based on unequal error protection according to the present invention.
  • the code block is segmented and the output code block is cascaded. The way is explained in detail.
  • the method in this embodiment may include:
  • Step 301 Determine the number of segments according to the symbol bit number Q m in the constellation diagram; the number of segments is an integer multiple of Q m /2.
  • Determining the number of segments C where Z represents the maximum value of the code block size, generally 6144, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit. Indicates rounding up. For example, if the calculated value is 3.5, the rounded up result is 4.
  • the number of segments C determined according to the above formula is an integer multiple of Q m /2, wherein the symbol number Q m in the constellation diagram is determined according to the modulation mode selected by the MCS, for example, at 16 Quadrature Amplitude Modulation (Quadrature Amplitude Modulation) ; abbreviation: when QAM), Q m is 4, when 64QAM, Q m is 6, when 256QAM, Q m is 8 and the like.
  • Step 302 Segment the code block according to the number of segments.
  • the code blocks corresponding to the data are segmented according to the number of segments.
  • the number of symbols Q m in the constellation diagram the number of segments is determined, and the code block is segmented according to the number of segments, so that the important data in the code block can be mapped to the position of the MSB in the constellation diagram, which is not important.
  • the data is mapped to the location of the LSB in the constellation diagram so that unequal error protection can be performed based on the importance of the data.
  • 4 is a schematic diagram of the result of code block segmentation. As shown in FIG.
  • the SVC encodes a video sequence into a data stream including a plurality of interdependent layers, from which the actual video service system is based on the specific needs of the user.
  • a corresponding number of sub-layers (sub-streams) are extracted, the most important of which is the base layer (abbreviation: BL), and the others are enhancement layers (ELs (1 to N)), and all ELs must depend on BL decoding, the high-level EL depends on the low-level EL, therefore, the importance of BL is higher than EL, and the low-level EL is more important than the high-level EL.
  • Step 303 Encode the segmented code block to obtain an encoded code block.
  • Turbo coding is performed on the segmented code block, wherein Turbo is mainly composed of parallel concatenated convolutional codes, two 8-state sub-encoders and one Turbo intra-code interleaver, and therefore, the result of Turbo coding It is divided into three ways. The first way is the system bit, and the last two are the check bits. At the beginning of the coding, the initial value of the shift register of the 8-state sub-encoder is 0.
  • the main function of the Turbo code interleaver is to combine two independent short codes into a long random code by using the idea of randomization, because the performance of the long code can approach the Shannon limit.
  • the interleaver can be used to spread burst errors, and the interleaver can also be used to break low-weight input sequence patterns, thereby increasing the minimum Hamming distance of the output codeword or reducing the number of low-weight output codewords.
  • Step 304 Perform interleaving processing on the coded code block by using an interleaver to obtain an interleaved code block.
  • the bit stream of the input interleaver is Where D is the number of input bits, and the number of columns of the matrix in the interleaver is And numbered from left to right in order of 0, 1, 2, ...,
  • the size of the matrix needs to be greater than or equal to D, that is, The number of rows for the matrix, therefore, The value is The smallest integer value, the rows of the matrix are numbered 0, 1, 2, ... from top to bottom.
  • the matrix includes information bits and padding bits, where the information bits are bits corresponding to the data, if Then need to add in the matrix A fake bit.
  • the interleaver is entered in a traveling manner for description, and the manner of listing is similar, and details are not described herein again.
  • the preceding N D –1 entries in the matrix are the added padding bits, which are as follows:
  • the result obtained after the encoding process has three channels of data, correspondingly, three interleavers are required to separately interleave the three channels of data. After entering the interleaver in the form of the above matrix, the three interleavers will respectively process the input matrix accordingly.
  • the interleaving manner is to perform column permutation, and Table 1 is in the form of column permutation:
  • P(j) is one-to-one corresponding to the number in the second row and second column of Table 1. For example, replace the original first column with the 16th column, and replace the original second column with the first column. 8 columns and so on.
  • the transformed matrix is:
  • P(j) represents the original position column position of the j-th transform column
  • y P(1) in the replaced matrix corresponds to the bit of y 16 in the original matrix
  • the interleaving mode is the form listed in the travel, that is, the read bit sequence of one column and one column.
  • k is an integer greater than or equal to zero
  • K ⁇ may be calculated according to the following formula:
  • Step 305 Perform rate matching on the interleaved code block to obtain an output code block.
  • N soft refers to the maximum buffer of data that the UE can process.
  • K MIMO is determined by the number of streams, which takes a value of 1 or 2.
  • M DL_HARQ refers to Hybrid Automatic Repeat reQuest (referred to as Hybrid Automatic Repeat reQuest; :HARQ)
  • the maximum number of processes, M limit represents a constant, its value is 8, and min(M DL_HARQ , M limit ) refers to how many HARQ processes there are.
  • C is the number of code blocks and K w is the total size of the bit stream from the three-way sub-interleaver.
  • ⁇ G′modC
  • G′ G/(N L ⁇ Q m )
  • r is an integer from 0 to C-1
  • G is the total number of bits that can be transmitted according to the allocated available RB resources.
  • the rth code block has a buffer size of N cb and the rate matching output length is E r .
  • the first time is sent as version Rv 0. If the receiver does not decode correctly, the Rv id version is replaced until the receiver decodes correctly.
  • the padding bit is filled in the matrix when the interleaving process is performed, if the padding bit is found during rate matching, the padding is directly skipped, and the next bit is matched, thus avoiding The phenomenon of rate matching of padding bits effectively saves bandwidth.
  • Step 306 Each Q m /2 output code blocks are used as a code block group, and the output code blocks in each code block group are sorted according to the importance of the data.
  • each Q m /2 output code blocks are regarded as one code block group, and the importance is sequentially decremented. Placed in a block group separately.
  • Step 307 For each code block group, sequentially acquire one bit from each of the sorted output code blocks, and concatenate the obtained bits, and repeat the operation until the Q m bits are cascaded.
  • FIG. 6 is a schematic diagram of a code block cascading process. As shown in FIG. 6, when the code block is segmented, after calculation, the number of code blocks is set to a multiple of 3, and the code block C 3k The data is more important than the data in the code block C 3k+1 , the data in C 3k+1 is more important than the data in C 3k+2 , and C 3k , C 3k+1 , C 3k+2 (k is an integer) constitute one code.
  • Block group when the code block is cascaded, one bit is selected from C 3k , C 3k+1 , C 3k+2 (k is an integer), and each time 2 times constitutes a 64QAM symbol, so that it is mapped to the order The location of the corresponding MSBs, Middle bits (MIDs) and LSBs on the 64QAM symbol.
  • k is an integer
  • Step 308 Perform data modulation on the concatenated code block to obtain modulated data.
  • Step 309 performing digital-to-analog conversion on the modulated data to obtain analog data.
  • Step 310 Send the analog data to the terminal device.
  • the data transmission method based on unequal error protection obtained by the embodiment of the present invention obtains a segment code block by segmenting the code block corresponding to the data according to the number of symbols in the constellation diagram, and the segment code code of the channel coding
  • the block performs rate matching, obtains an output code block, and cascades the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block, and sends the concatenated code block to the terminal device. Since the base station segments and cascades the code blocks according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation, so that the LTE system can also achieve The purpose of data unequal error protection. In addition, the importance of video data is differentiated by code blocks, improving operability.
  • FIG. 7 is a schematic flowchart of Embodiment 3 of a data transmission method based on unequal error protection according to the present invention.
  • the embodiment of the present invention provides a data transmission method based on unequal error protection, which may be performed by any device that performs a data transmission method based on unequal error protection, and the device may be implemented by software and/or hardware. In this embodiment, the device can be integrated in the terminal device.
  • the method in this embodiment may include:
  • Step 701 Receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to the number of symbols in the constellation, and performs the channel coded segmented code block. The rate is matched to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation.
  • the base station when the base station receives the message sent by the terminal device for requesting to receive data, The base station will process the SVC video source data in units of bytes, that is, in the format of a Media Access Control (MAC) Protocol Data Unit (PDU).
  • MAC Media Access Control
  • PDU Protocol Data Unit
  • an L-bit check bit is first added at the end of the MAC PDU to verify whether the MAC PDU is correct.
  • a CRC check may be used to add a 24-bit check digit to the end of the MAC PDU.
  • the base station segments the code block, and after obtaining the segment code block, the segment code block is encoded.
  • the Turbo coding mode is generally adopted, and after the coding, one system bit code block and two way schools are obtained.
  • the bit-checking code block respectively performs interleaving and bit-collecting processing by the three-way code block through the sub-interleaver to combine the three-way code blocks into one path, and then performs rate matching on the one-way code block to obtain an output code block.
  • the base station splices the obtained output code blocks according to the number of symbols in the constellation diagram to complete the concatenation of the code blocks, obtains the concatenated code blocks, and sends the concatenated code blocks to the terminal device.
  • Step 702 Perform code block splitting on the concatenated code block according to the number of symbols in the constellation diagram to obtain a split code block.
  • the base station since the base station performs the code block cascading according to the number of symbols in the constellation diagram, correspondingly, after receiving the cascading code block sent by the base station, the terminal device needs to be according to the constellation diagram.
  • the number of symbols is split into code blocks to obtain split code blocks.
  • Step 703 Perform code block cascading on the channel coded split code block to obtain data.
  • the terminal blocks are sequentially spliced to obtain output sequence bits, that is, the MAC PDU data packets are obtained.
  • the base station obtains the segment code block by segmenting the code block corresponding to the data according to the number of symbols in the constellation diagram, and segments the channel coded segment.
  • the code block performs rate matching, obtains an output code block, and cascades the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block, and sends the concatenated code block to the terminal device. Since the base station segments and cascades the code blocks according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation, so that the LTE system can also achieve The purpose of data unequal error protection. In addition, because the terminal device is based on the symbol in the constellation The number of bits is used to split the coded block to obtain the same data as the original data, and the unequal error protection of the video data is realized.
  • FIG. 8 is a schematic flowchart of Embodiment 4 of a data transmission method based on unequal error protection according to the present invention.
  • this embodiment on the basis of the embodiment shown in FIG. 7, a method for performing code block splitting on a concatenated code block is detailed. Description.
  • the method in this embodiment may include:
  • Step 801 Receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to the number of symbols in the constellation, and performs the channel coded segmented code block. The rate is matched to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation.
  • Step 802 Taking each Q m /2 bits in the concatenated code block as one bit group, and sequentially acquiring one bit from each bit group, and composing the acquired bits into a bit stream.
  • step 802 is the inverse operation of step 306 and step 307. Specifically, the received 64QAM symbols are arranged vertically, and the second symbol is vertically arranged and then connected to the previous symbol, followed by sequentially. Finally, the code block output is formed according to the row, so that the code block can be split, and the data of the base station side is mapped to the corresponding position in the constellation map according to the data importance.
  • Step 803 Perform deinterleaving processing on the split code block by using a deinterleaver to obtain a deinterleaved code block.
  • Step 803 is the inverse of step 304.
  • Step 804 Perform decoding processing on the deinterleaved code block to obtain a decoded code block.
  • Step 804 is the inverse of step 303.
  • Step 805 Perform CRC check and code block concatenation processing on the decoded code block in sequence to obtain data.
  • the code blocks are spliced in order to obtain MAC PDU data packets.
  • the terminal device performs code block splitting on the concatenated code block sent by the base station according to the number of symbols in the constellation diagram, and performs code block cascading on the obtained split code block, so that the code mapped in different positions can be mapped.
  • the block is split to obtain data, which improves the scalability of the communication system.
  • FIG. 9 is a schematic flowchart of Embodiment 5 of a data transmission method based on unequal error protection according to the present invention.
  • the embodiment of the present invention provides a data transmission method based on unequal error protection, which may be performed by any device that performs a data transmission method based on unequal error protection, and the device may be implemented by software and/or hardware. In this embodiment, the device can be integrated in the base station.
  • the method in this embodiment may include:
  • Step 901 Segment the code block corresponding to the data according to the preset parameter to obtain a segment code block.
  • the values of Q m /2 are 2 and 4, respectively, since the bit stream length D r of the input sub-interleaver needs to satisfy the condition that it is an integer multiple of 2 or 4.
  • D r K r +4
  • K r represents the length of the rth code block when the Turbo encoder is input
  • D r represents the code from Turbo.
  • the Turbo code block length satisfies this condition, and therefore the parameter calculation method of the code block segmentation is the same as the prior art.
  • Step 902 Perform encoding processing on the segment code block to obtain a coded code block, where the coded code block includes a system bit code block.
  • Step 902 is similar to step 303, and details are not described herein again.
  • Step 903 Perform interleaving processing on the system bit code block according to the number of symbols in the constellation diagram to obtain an interleaved code block.
  • the system bit code block and the two parity bit code blocks are obtained.
  • the interleaving processing mode of the two parity bit code blocks refer to step 304. I won't go into details here.
  • For the system bit code block it can be processed according to the number of symbols in the constellation diagram to obtain an interleaved code block.
  • Step 904 Cascading the interleaved code blocks, obtaining the concatenated code blocks, and transmitting the concatenated code blocks to the terminal device.
  • the obtained interleaved code blocks are sequentially spliced to obtain a cascading code block, and
  • the concatenated code block is sequentially subjected to data modulation and digital-to-analog conversion to obtain analog data, and the analog data is sent to the terminal device for decoding by the terminal device to obtain data.
  • the data transmission method based on unequal error protection provided by the embodiment of the present invention obtains a segment code block by segmenting a code block corresponding to the video data according to a preset parameter, and performs coding processing on the segment code block to obtain an encoding code.
  • Block, the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram, the interleaved code block is obtained, the interleaved code block is concatenated, and the concatenated code block is obtained, and The concatenated code block is sent to the terminal device.
  • the base station Since the base station interleaves the system bit code block according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can also be achieved in the LTE system.
  • Embodiment 6 is a schematic flowchart of Embodiment 6 of a data transmission method based on unequal error protection according to the present invention.
  • segmenting a code block and interleaving a system bit code block are performed. The way to make a detailed description.
  • the method in this embodiment may include:
  • Step 1001 Determine a number of segments, a segment code block length, and a first padding number according to preset parameters; the padding bits are bits used when performing bit stuffing on the code block.
  • Step 1002 Perform bit filling on the code block according to the number of segments, the length of the segment code block, and the number of first padding bits.
  • FIG. 11 is a schematic diagram of a segmentation process.
  • a K + row and C column interleave is added to the matrix when performing segmentation processing.
  • the sub-matrix of the (K + -K - )*C - size in the upper left corner of the matrix is placed with padding bits, and the first column is followed by F padding bits.
  • the MAC PDU sequence is input into the interleaver in rows, and is output in columns. That is, C code blocks that meet the previous discharge order of important data are obtained.
  • Step 1003 Perform encoding processing on the segment code block to obtain a coded code block, where the code code block includes a system bit code block.
  • Step 1004 Determine the number of rows of the interleaver according to the number of symbols in the constellation diagram, and determine the number of second padding bits according to the number of rows of the interleaver and the number of columns of the preset interleaver.
  • the number of rows of the sub-interleaver needs to be with The smallest integer value, where For the number of rows of the sub-interleaver, D is the number of input bits. In addition, the number of second padding bits among them, The number of columns of the interleaver is generally 32.
  • Step 1005 Place padding bits and information bits according to the number of second padding bits and the number of symbol bits in the constellation diagram; the information bits are bits corresponding to the data.
  • Figure 12 is a schematic diagram of the interleaving process, as shown in Figure 12, generally Therefore, the padding bit X is placed in the submatrix of (Q m /2)*(2N D /Q m ) in the upper left corner of the matrix.
  • the padding bit X is placed in the submatrix of (Q m /2)*(2N D /Q m ) in the upper left corner of the matrix.
  • the code block data is placed every Q m /2 lines, so that the most important data is placed in the first line of Q m /2 bits and one column of data, the next most important data is placed in the middle row, the least The important data is placed in the last row.
  • the bit stream is read out by the column, and the mapping is performed every Q m /2 bits, which can still correspond to the MSBs, MIDs and LSBs in the constellation symbol. .
  • Step 1006 Cascading the interleaved code blocks, obtaining the concatenated code blocks, and transmitting the concatenated code blocks to the terminal device.
  • the data transmission method based on unequal error protection provided by the embodiment of the present invention obtains a segmented code block by segmenting a code block corresponding to the data according to a preset parameter, and performs coding processing on the segment code block to obtain a coded code block.
  • the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram, the interleaved code block is obtained, the interleaved code block is concatenated, the concatenated code block is obtained, and the level is obtained.
  • the code block is sent to the terminal device.
  • the base station interleaves the system bit code block according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can also be achieved in the LTE system.
  • the importance of the data is differentiated by code blocks, which can adapt to any modulation mode and improve the scalability of the system.
  • FIG. 13 is a schematic flowchart diagram of Embodiment 7 of a data transmission method based on unequal error protection according to the present invention.
  • the embodiment of the present invention provides a data transmission method based on unequal error protection, which may be performed by any device that performs a data transmission method based on unequal error protection, and the device may be implemented by software and/or hardware. In this embodiment, the device can be integrated in the terminal device.
  • the method in this embodiment may include:
  • Step 1301 Receive a concatenated code block sent by the base station.
  • the concatenated code block segments the code block corresponding to the data according to the number of symbols in the constellation, and performs the channel coded segmented code block.
  • the rate is matched to obtain an output code block, and the output code blocks are concatenated according to the number of symbols in the constellation.
  • a condition therefore, the number of segments needs to be determined according to preset parameters, and the code blocks corresponding to the data are segmented.
  • the obtained segmented code block is encoded to obtain an encoded code block, and the coded code block includes a systematic bit code block.
  • the system bit code block is interleaved to obtain an interleaved code block, and the interleaved code block is concatenated to obtain a concatenated code block, and the concatenated code block is sent to the terminal. device.
  • Step 1302 Perform LTE data receiving processing on the concatenated code block to obtain a check code block.
  • Step 1303 Perform cascading of code blocks that are performed by performing column check on the check code block to obtain a cascading code block.
  • the check code blocks are cascaded according to the principle of performing the column to form a BL+EL form, which ensures that the cascaded data is consistent with the original MAC PDU data.
  • the data transmission method based on the unequal error protection provided by the embodiment of the present invention obtains a check code block by receiving a concatenated code block sent by the base station, and performing LTE data receiving processing on the concatenated code block, and the check code block is obtained.
  • the block proceeds to cascade the code blocks listed to obtain a concatenated code block. Since the base station interleaves the system bit code block according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can also be achieved in the LTE system. The purpose of unequal error protection.
  • the terminal device cascades the code blocks that are performed by the check code block to ensure that the cascaded data and the original MAC PDU data are in the same order, thereby realizing the unequal error protection of the video data, and improving the The quality of the video.
  • FIG. 14 is a schematic structural diagram of Embodiment 1 of a data transmission apparatus based on unequal error protection according to the present invention.
  • the data transmission apparatus based on unequal error protection according to an embodiment of the present invention includes a segmentation module 11 and a matching module. 12. Cascade module 13 and transmitting module 14.
  • the segmentation module 11 is configured to segment the code block corresponding to the data according to the number of symbols in the constellation diagram to obtain the segment code block;
  • the matching module 12 is configured to perform the channel coded segment code block. Rate matching, obtaining an output code block;
  • the cascading module 13 is configured to cascade the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block; and
  • the sending module 14 is configured to use the level The code block is sent to the terminal device.
  • a data transmission apparatus based on unequal error protection provided by an embodiment of the present invention according to a constellation
  • the code block corresponding to the data is segmented, the segment code block is obtained, the channel coded segment code block is rate matched, the output code block is obtained, and the number of symbols in the constellation diagram is obtained. And cascading the output code blocks, obtaining the concatenated code blocks, and transmitting the concatenated code blocks to the terminal device. Since the base station segments and cascades the code blocks according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation, so that the LTE system can also achieve The purpose of data unequal error protection.
  • FIG. 15 is a schematic structural diagram of Embodiment 2 of a data transmission apparatus based on unequal error protection according to the present invention. As shown in FIG. 15, the present embodiment is based on the embodiment shown in FIG.
  • the determining unit 111 is configured to determine, according to the symbol bit number Q m in the constellation diagram, the number of segments; the number of segments is an integer multiple of Q m /2;
  • the segmentation unit 112 is configured to segment the code block according to the number of segments.
  • the determining unit 111 is specifically configured to:
  • the number of segments C' is determined, where Z represents the maximum value of the code block size, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit.
  • the data transmission apparatus based on the unequal error protection in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. Let me repeat.
  • FIG. 16 is a schematic structural diagram of Embodiment 3 of a data transmission apparatus based on unequal error protection according to the present invention. As shown in FIG. 16, this embodiment is based on the embodiment shown in FIG. 15.
  • the cascading module 13 includes:
  • the sorting unit 131 is configured to use each Q m /2 of the output code blocks as one code block group, and sort the output code blocks in each code block group according to the importance of the data;
  • the obtaining unit 132 is configured to sequentially acquire one bit from each of the sorted output code blocks for each code block group, and cascade the obtained bits, and repeat the operation until the Q m bits are cascaded.
  • the data transmission device based on the unequal error protection of the embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, which implements the original
  • the technical and technical effects are similar and will not be described here.
  • FIG. 17 is a schematic structural diagram of Embodiment 4 of a data transmission apparatus based on unequal error protection according to the present invention. As shown in FIG. 17, the present embodiment is based on the foregoing embodiments, and the matching module 12 includes:
  • the encoding unit 121 is configured to encode the segmentation code block to obtain an encoded code block.
  • the interleaving unit 122 is configured to perform interleaving processing on the coded code block by using an interleaver to obtain an interleaved code block.
  • the matching unit 123 is configured to perform rate matching on the interleaved code block to obtain the output code block.
  • the device further includes:
  • the modulation module 15 is configured to perform data modulation on the concatenated code block to obtain modulated data.
  • the conversion module 16 is configured to perform digital-to-analog conversion on the modulated data to obtain analog data.
  • the sending module 14 is further configured to send the analog data to the terminal device.
  • the data transmission apparatus based on the unequal error protection in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. Let me repeat.
  • FIG. 18 is a schematic structural diagram of Embodiment 5 of a data transmission apparatus based on unequal error protection according to the present invention.
  • a data transmission apparatus based on unequal error protection according to an embodiment of the present invention includes a segmentation module 21 and an encoding module. 22. Interleaving module 23, cascading module 24 and transmitting module 25.
  • the segmentation module 21 is configured to segment the code block corresponding to the data according to the preset parameter to obtain the segment code block.
  • the encoding module 22 is configured to perform encoding processing on the segmented code block to obtain a coded code block, where the coded code block includes a system bit code block;
  • the interleaving module 23 is configured to perform interleaving processing on the system bit code block according to the number of symbol bits in the constellation diagram to obtain an interleaved code block;
  • the cascading module 24 is configured to cascade the interleaved code blocks to obtain a cascading code block.
  • the sending module 25 is configured to send the concatenated code block to the terminal device.
  • the data transmission apparatus based on the unequal error protection provided by the embodiment of the present invention obtains the fragmentation code block by segmenting the code block corresponding to the data according to the preset parameter, and performs coding processing on the fragmentation code block to obtain the coded code block.
  • the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram, the interleaved code block is obtained, and the interleaved code block is cascaded to obtain the concatenated code. Block and send the concatenated code block to the terminal device.
  • the base station Since the base station interleaves the system bit code block according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can also be achieved in the LTE system.
  • FIG. 19 is a schematic structural diagram of Embodiment 6 of a data transmission apparatus based on unequal error protection according to the present invention. As shown in FIG. 19, the present embodiment is based on the embodiment shown in FIG.
  • the first determining unit 211 is configured to determine, according to the preset parameter, a segment number, a segment code block length, and a first padding bit number; the padding bit is a bit used when performing bit filling on the code block;
  • the padding unit 212 is configured to perform bit filling on the code block according to the number of segments, the segment code block length, and the first padding number to segment the code block.
  • the interleaving module 23 includes:
  • the second determining unit 231 is configured to determine the number of rows of the interleaver according to the number of symbols in the constellation diagram, and determine the second padding according to the number of rows of the interleaver and the preset number of columns of the interleaver The number of bits;
  • the placing unit 232 is configured to respectively place padding bits and information bits according to the number of the second padding bits and the number of symbol bits in the constellation diagram; the information bits are bits corresponding to the data.
  • the data transmission apparatus based on the unequal error protection in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. Let me repeat.
  • FIG. 20 is a schematic structural diagram of Embodiment 7 of a data transmission apparatus based on unequal error protection according to the present invention.
  • the data transmission apparatus based on unequal error protection provided by the embodiment of the present invention includes a receiving module 31 and a splitting module. 32 and cascading module 33.
  • the receiving module 31 is configured to receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to the number of symbols in the constellation diagram, and segments the channel coded segment. Performing rate matching on the following code blocks to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation diagram; and the splitting module 32 is configured to be used according to the constellation a symbol bit number, performing code block splitting on the concatenated code block to obtain a split code block; the concatenation module 33 is configured to perform code block concatenation on the channel coded split code block to obtain the data.
  • the base station passes the The number of symbols in the constellation diagram, segmenting the code block corresponding to the data, obtaining a segmented code block, performing rate matching on the channel coded segment code block, obtaining an output code block, and according to the symbol bit in the constellation diagram Counting the output code blocks, obtaining the concatenated code blocks, and transmitting the concatenated code blocks to the terminal device. Since the base station segments and cascades the code blocks according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation, so that the LTE system can also achieve The purpose of data unequal error protection. In addition, since the terminal device performs code block splitting on the concatenated code blocks according to the number of symbols in the constellation diagram to obtain data having the same order as the original data, the unequal error protection of the data is realized.
  • the splitting module 32 is specifically configured to use each Q m /2 bits in the concatenated code block as one bit group, and sequentially acquire one bit from each bit group, and The acquired bits form a bit stream.
  • FIG. 21 is a schematic structural diagram of Embodiment 8 of a data transmission apparatus based on unequal error protection according to the present invention.
  • the cascading module 33 includes:
  • the deinterleaving unit 331 is configured to perform deinterleaving processing on the split code block by using a deinterleaver to obtain a deinterleaved code block.
  • the decoding unit 332 is configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block.
  • the processing unit 333 is configured to perform CRC check and code block concatenation processing on the decoded code block in sequence to obtain the data.
  • the data transmission apparatus based on the unequal error protection in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. Let me repeat.
  • FIG. 22 is a schematic structural diagram of Embodiment 9 of a data transmission apparatus based on unequal error protection according to the present invention.
  • the data transmission apparatus based on unequal error protection provided by the embodiment of the present invention includes a receiving module 41 and a processing module 42. And cascading module 43.
  • the receiving module 41 is configured to receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to a preset parameter, and performs coding processing on the obtained segment code block. Encoding a code block, the coded code block comprising a systematic bit code block, performing interleaving processing on the systematic bit code block according to a number of symbol bits in the constellation diagram, obtaining an interleaved code block, and cascading the interleaved code block.
  • the processing module 42 is configured to perform LTE data receiving processing on the concatenated code block, Obtaining a check code block; the cascading module 43 is configured to cascade the code blocks listed by the check code block to obtain a cascading code block.
  • the data transmission apparatus based on the unequal error protection provided by the embodiment of the present invention obtains a check code block by receiving a concatenated code block sent by the base station, and performing LTE data receiving processing on the concatenated code block, and the check code block is obtained.
  • the block proceeds to cascade the code blocks listed to obtain a concatenated code block. Since the base station interleaves the system bit code block according to the number of symbols in the constellation diagram, the important data in the data is mapped to a position with a smaller bit error rate in the constellation diagram, so that the data can also be achieved in the LTE system. The purpose of unequal error protection.
  • FIG. 23 is a schematic structural diagram of Embodiment 10 of a data transmission apparatus based on unequal error protection according to the present invention. As shown in FIG. 23, this embodiment is based on the embodiment shown in FIG. 22, and the processing module 42 includes:
  • the splitting unit 421 is configured to perform code block splitting on the concatenated code block to obtain a split code block.
  • the deinterleaving unit 422 is configured to perform deinterleaving processing on the split code block to obtain a deinterleaved code block.
  • the decoding unit 423 is configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block.
  • the checking unit 424 is configured to perform verification on the decoded code block to obtain a check code block.
  • the data transmission apparatus based on the unequal error protection in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. Let me repeat.
  • FIG. 24 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • a base station according to an embodiment of the present invention includes a processor 51 and a transmitter 52.
  • the processor 51 is configured to segment the code block corresponding to the data according to the number of symbols in the constellation diagram to obtain the segment code block.
  • the processor 51 is further configured to perform rate matching on the channel coded segment code block to obtain an output code block.
  • the processor 51 is further configured to cascade the output code blocks according to the number of symbols in the constellation diagram to obtain a concatenated code block;
  • the transmitter 52 is configured to send the concatenated code block to the terminal device.
  • the base station provided in this embodiment may be used to implement the technical solution of the data transmission method based on the unequal error protection provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the processor 51 is further configured to determine, according to a symbol bit number Q m in the constellation diagram, a number of segments; the number of segments is an integer multiple of Q m /2;
  • the processor 51 is further configured to segment the code block according to the number of segments.
  • the processor 51 is further configured to The number of segments C' is determined, where Z represents the maximum value of the code block size, B represents the size of the input bit stream corresponding to the code block, and L represents the size of the CRC check bit.
  • the processor 51 is further configured to use each Q m /2 of the output code blocks as one code block group, and perform output code blocks in each code block group according to the importance of the data. Sort
  • the processor 51 is further configured to sequentially acquire one bit from each of the sorted output code blocks for each code block group, and cascade the obtained bits, and repeat the operation until Q m bits are used. cascade.
  • the processor 51 is further configured to: encode the fragmentation code block to obtain an encoded code block;
  • the processor 51 is further configured to perform interleaving processing on the coded code block by using an interleaver to obtain an interleaved code block;
  • the processor 51 is further configured to perform rate matching on the interleaved code block to obtain the output code block.
  • the processor 51 is further configured to perform data modulation on the concatenated code block to obtain modulated data.
  • the processor 51 is further configured to perform digital-to-analog conversion on the modulated data to obtain analog data.
  • the transmitter 52 is further configured to send the analog data to the terminal device.
  • the base station provided in this embodiment may be used to implement the technical solution of the data transmission method based on the unequal error protection provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 25 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • a base station according to an embodiment of the present invention includes a processor 61 and a transmitter 62.
  • the processor 61 is configured to segment the code block corresponding to the data according to the preset parameter to obtain the segment code block.
  • the processor 61 is further configured to perform coding processing on the segmentation code block to obtain an encoded code block, where the coded code block includes a system bit code block;
  • the processor 61 is further configured to perform interleaving processing on the system bit code block according to a number of symbol bits in the constellation diagram to obtain an interleaved code block;
  • the processor 61 is further configured to cascade the interleaved code blocks to obtain a concatenated code block.
  • the transmitter 62 is configured to send the concatenated code block to the terminal device.
  • the base station provided in this embodiment may be used to implement the technical solution of the data transmission method based on the unequal error protection provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the processor 61 is further configured to determine, according to the preset parameter, a number of segments, a segment code block length, and a first padding number; the padding bit is used when performing bit filling on the code block.
  • the processor 61 is further configured to perform bit filling on the code block according to the number of segments, the length of the segment code block, and the number of the first padding bits to segment the code block.
  • the processor 61 is further configured to determine, according to the number of symbols in the constellation diagram, the number of rows of the interleaver, and according to the number of rows of the interleaver and the preset number of columns of the interleaver Determining the number of second padding bits;
  • the processor 61 is further configured to respectively place padding bits and information bits according to the number of the second padding bits and the number of symbol bits in the constellation; the information bits are bits corresponding to the data.
  • the base station provided in this embodiment may be used to implement the technical solution of the data transmission method based on the unequal error protection provided by any embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 26 is a schematic structural diagram of Embodiment 1 of a terminal device according to the present invention.
  • a terminal device provided by an embodiment of the present invention includes a receiver 71 and a processor 72.
  • the receiver 71 is configured to receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to the number of symbols in the constellation, and segments the channel coded segment. Performing rate matching on the following code blocks to obtain an output code block, which is obtained by cascading the output code blocks according to the number of symbols in the constellation diagram;
  • the processor 72 is configured to perform code block splitting on the concatenated code block according to the number of symbol bits in the constellation diagram to obtain a split code block;
  • the processor 72 is further configured to perform code block cascading on the channel coded split code block to obtain The data.
  • the terminal device provided in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the processor 72 is further configured to use each Q m /2 bits in the concatenated code block as one bit group, and sequentially acquire one bit from each bit group, and obtain the The bits make up the bit stream.
  • the processor 72 is further configured to perform deinterleaving processing on the split code block by using a deinterleaver to obtain a deinterleaved code block.
  • the processor 72 is further configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block.
  • the processor 72 is further configured to perform CRC check and code block concatenation processing on the decoded code block in sequence to obtain the data.
  • the terminal device provided in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 27 is a schematic structural diagram of Embodiment 2 of a terminal device according to the present invention.
  • the terminal device provided by the embodiment of the present invention includes a receiver 81 and a processor 82.
  • the receiver 81 is configured to receive a concatenated code block sent by the base station, where the concatenated code block segments the code block corresponding to the data according to a preset parameter, and performs coding processing on the obtained segment code block to obtain an encoded code.
  • Block, the coded code block includes a systematic bit code block, and the system bit code block is interleaved according to the number of symbols in the constellation diagram to obtain an interleaved code block, and the interleaved code block is cascaded to obtain of;
  • the processor 82 is configured to perform LTE data receiving processing on the concatenated code block to obtain a check code block.
  • the processor 82 is further configured to cascade the code blocks listed by the check code block to obtain a concatenated code block.
  • the terminal device provided in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the processor 82 is further configured to perform code block splitting on the concatenated code block to obtain a split code block.
  • the processor 82 is further configured to perform deinterleaving processing on the split code block to obtain a deinterleaved code block.
  • the processor 82 is further configured to perform decoding processing on the deinterleaved code block to obtain a decoded code block.
  • the processor 82 is further configured to perform verification on the decoded code block to obtain a check code block.
  • the terminal device provided in this embodiment may be used to implement the technical solution of the data transmission method based on unequal error protection provided by any embodiment of the present invention, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor Processor
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例涉及一种基于不等差错保护的数据传输方法、装置和设备，该方法包括：根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；对经信道编码的所述分段码块进行速率匹配，获得输出码块；根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；将所述级联码块发送到终端设备。本发明实施例的基于不等差错保护的数据传输方法、装置和设备在LTE系统中实现了数据的不等差错保护。

Description

基于不等差错保护的数据传输方法、装置和设备 技术领域
本发明实施例涉及通信技术，特别涉及一种基于不等差错保护的数据传输方法、装置和设备。
背景技术
视频数据除了具有数据量大的特征之外，还具有在视频编码过程中，编码生成对接收端解码以恢复视频数据影响程度不一致的数据流的特征。因此，如何针对视频数据不同的重要性来进行编码，以有效地保护数据，是一个非常重要的问题。
在现有技术中，根据视频数据的重要性，将视频数据进行优先级排序，在将视频数据根据不同的优先级分成不同的队列之后，将该队列发送到卷积编码器，再由卷积编码器将该队列发送到梳状滤波器，在梳状滤波器中，根据贪婪算法将高优先级的数据比特放在调制符号的最高有效位(Most Significant Bit；简称：MSB)的位置，将低优先级的数据比特放在调制符号的最低有效位(Least Significant Bit；简称：LSB)的位置，这样就能实现对数据进行有效保护的目的。
然而，现有技术中采用的信道编码方式为卷积码，而且在进入编码器前需要将视频数据按照重要性区分为不同的队列。而长期演进(Long Term Evolution；简称：LTE)系统中使用的是Turbo编码，另外，视频数据也无法区分重要性，因此，现有的视频数据保护方式不适用于LTE系统。
发明内容
本发明实施例提供了一种基于不等差错保护的数据传输方法、装置和设备，以在LTE系统中实现了视频数据的不等差错保护。
第一方面，本发明实施例提供一种基于不等差错保护的数据传输方法，包括：
根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
对经信道编码的所述分段码块进行速率匹配，获得输出码块；
根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
将所述级联码块发送到终端设备。
结合第一方面，在第一方面的第一种可能的实现方式中，所述根据星座图中的符号位数，将数据对应的码块进行分段，包括：
根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
根据所述分段数量，将所述码块进行分段。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述根据所述星座图中的符号位数Qm，确定分段数量，包括：
根据公式
Figure PCTCN2015084374-appb-000001
确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
结合第一方面的第一种或第二种可能的实现方式，在第一方面的第三种可能的实现方式中，根据所述星座图中的符号位数，对所述输出码块进行级联，包括：
将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
结合第一方面、第一方面的第一种至第一方面的第三种任一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述对经信道编码的所述分段码块进行速率匹配，包括：
对所述分段码块进行编码，获得编码码块；
对所述编码码块通过交织器进行交织处理，获得交织码块；
对所述交织码块进行速率匹配，获得所述输出码块。
结合第一方面、第一方面的第一种至第一方面的第四种任一种可能的实现方式，在第一方面的第五种可能的实现方式中，所述将所述级联码块发送 到终端设备，包括：
将所述级联码块进行数据调制，获得调制数据；
对所述调制数据进行数-模转换，获得模拟数据；
将所述模拟数据发送到所述终端设备。
第二方面，本发明实施例提供一种基于不等差错保护的数据传输方法，包括：
根据预设参数将数据对应的码块进行分段，获得分段码块；
对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
对所述交织码块进行级联，获得级联码块，并将所述级联码块发送到终端设备。
结合第二方面，在第二方面的第一种可能的实现方式中，所述根据预设参数将数据对应的码块进行分段，包括：
根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述根据星座图中的符号位数，对所述系统位码块进行交织处理，包括：
根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
第三方面，本发明实施例提供一种基于不等差错保护的数据传输方法，包括：
接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配， 得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
对经信道译码的所述拆分码块进行码块级联，获得所述数据。
结合第三方面，在第三方面的第一种可能的实现方式中，所述根据所述星座图中的符号位数，对所述级联码块进行码块拆分，包括：
将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述对经信道译码的所述拆分码块进行码块级联，包括：
对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
对所述解交织码块进行译码处理，获得译码码块；
对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
第四方面，本发明实施例提供一种基于不等差错保护的数据传输方法，包括：
接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
对所述级联码块进行LTE数据接收处理，获得校验码块；
对所述校验码块进行行进列出的码块级联，获得级联码块。
结合第四方面，在第四方面的第一种可能的实现方式中，所述对所述级联码块进行LTE数据接收处理，包括：
对所述级联码块进行码块拆分，获得拆分码块；
对所述拆分码块进行解交织处理，获得解交织码块；
对所述解交织码块进行译码处理，获得译码码块；
对所述译码码块进行校验，获得校验码块。
第五方面，本发明实施例提供一种基于不等差错保护的数据传输装置， 包括：
分段模块，用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
匹配模块，用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；
级联模块，用于根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
发送模块，用于将所述级联码块发送到终端设备。
结合第五方面，在第五方面的第一种可能的实现方式中，所述分段模块包括：
确定单元，用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
分段单元，用于根据所述分段数量，将所述码块进行分段。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述确定单元，具体用于：
根据公式
Figure PCTCN2015084374-appb-000002
确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
结合第五方面的第一种或第二种可能的实现方式，在第五方面的第三种可能的实现方式中，所述级联模块包括：
排序单元，用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
获取单元，用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
结合第五方面、第五方面的第一种至第五方面的第三种任一种可能的实现方式，在第五方面的第四种可能的实现方式中，所述匹配模块包括：
编码单元，用于对所述分段码块进行编码，获得编码码块；
交织单元，用于对所述编码码块通过交织器进行交织处理，获得交织码 块；
匹配单元，用于对所述交织码块进行速率匹配，获得所述输出码块。
结合第五方面、第五方面的第一种至第五方面的第四种任一种可能的实现方式，在第五方面的第五种可能的实现方式中，所述装置还包括：
调制模块，用于将所述级联码块进行数据调制，获得调制数据；
转换模块，用于对所述调制数据进行数-模转换，获得模拟数据；
所述发送模块，还用于将所述模拟数据发送到所述终端设备。
第六方面，本发明实施例提供一种基于不等差错保护的数据传输装置，包括：
分段模块，用于根据预设参数将数据对应的码块进行分段，获得分段码块；
编码模块，用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
交织模块，用于根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
级联模块，用于对所述交织码块进行级联，获得级联码块；
发送模块，用于将所述级联码块发送到终端设备。
结合第六方面，在第六方面的第一种可能的实现方式中，所述分段模块包括：
第一确定单元，用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
填充单元，用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
结合第六方面的第一种可能的实现方式，在第六方面的第二种可能的实现方式中，所述交织模块包括：
第二确定单元，用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
放置单元，用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
第七方面，本发明实施例提供一种基于不等差错保护的数据传输装置，包括：
接收模块，用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
拆分模块，用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
级联模块，用于对经信道译码的所述拆分码块进行码块级联，获得所述数据。
结合第七方面，在第七方面的第一种可能的实现方式中，所述拆分模块具体用于将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
结合第七方面或第七方面的第一种可能的实现方式，在第七方面的第二种可能的实现方式中，所述级联模块包括：
解交织单元，用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
译码单元，用于对所述解交织码块进行译码处理，获得译码码块；
处理单元，用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
第八方面，本发明实施例提供一种基于不等差错保护的数据传输装置，包括：
接收模块，用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
处理模块，用于对所述级联码块进行LTE数据接收处理，获得校验码块；
级联模块，用于对所述校验码块进行行进列出的码块级联，获得级联码块。
结合第八方面，在第八方面的第一种可能的实现方式中，所述处理模块包括：
拆分单元，用于对所述级联码块进行码块拆分，获得拆分码块；
解交织单元，用于对所述拆分码块进行解交织处理，获得解交织码块；
译码单元，用于对所述解交织码块进行译码处理，获得译码码块；
校验单元，用于对所述译码码块进行校验，获得校验码块。
第九方面，本发明实施例提供一种基站，包括：
处理器，用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
所述处理器，还用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；
所述处理器，还用于根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
发送器，用于将所述级联码块发送到终端设备。
结合第九方面，在第九方面的第一种可能的实现方式中，所述处理器，还用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
所述处理器，还用于根据所述分段数量，将所述码块进行分段。
结合第九方面的第一种可能的实现方式，在第九方面的第二种可能的实现方式中，所述处理器，还用于根据公式
Figure PCTCN2015084374-appb-000003
确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
结合第九方面的第一种或第二种可能的实现方式，在第九方面的第三种可能的实现方式中，所述处理器，还用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
所述处理器，还用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
结合第九方面、第九方面的第一种至第九方面的第三种任一种可能的实 现方式，在第九方面的第四种可能的实现方式中，所述处理器，还用于对所述分段码块进行编码，获得编码码块；
所述处理器，还用于对所述编码码块通过交织器进行交织处理，获得交织码块；
所述处理器，还用于对所述交织码块进行速率匹配，获得所述输出码块。
结合第九方面、第九方面的第一种至第九方面的第四种任一种可能的实现方式，在第九方面的第五种可能的实现方式中，所述处理器，还用于将所述级联码块进行数据调制，获得调制数据；
所述处理器，还用于对所述调制数据进行数-模转换，获得模拟数据；
所述发送器，还用于将所述模拟数据发送到所述终端设备。
第十方面，本发明实施例提供一种基站，包括：
处理器，用于根据预设参数将数据对应的码块进行分段，获得分段码块；
所述处理器，还用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
所述处理器，还用于根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
所述处理器，还用于对所述交织码块进行级联，获得级联码块；
发送器，用于将所述级联码块发送到终端设备。
结合第十方面，在第十方面的第一种可能的实现方式中，所述处理器，还用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
所述处理器，还用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
结合第十方面的第一种可能的实现方式，在第十方面的第二种可能的实现方式中，所述处理器，还用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
所述处理器，还用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
第十一方面，本发明实施例提供一种终端设备，包括：
接收器，用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
处理器，用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
所述处理器，还用于对经信道译码的所述拆分码块进行码块级联，获得所述数据。
结合第十一方面，在第十一方面的第一种可能的实现方式中，所述处理器，还用于将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
结合第十一方面或第十一方面的第一种可能的实现方式，在第十一方面的第二种可能的实现方式中，所述处理器，还用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
所述处理器，还用于对所述解交织码块进行译码处理，获得译码码块；
所述处理器，还用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
第十二方面，本发明实施例提供一种终端设备，包括：
接收器，用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
处理器，用于对所述级联码块进行LTE数据接收处理，获得校验码块；
所述处理器，还用于对所述校验码块进行行进列出的码块级联，获得级联码块。
结合第十二方面，在第十二方面的第一种可能的实现方式中，所述处理器，还用于对所述级联码块进行码块拆分，获得拆分码块；
所述处理器，还用于对所述拆分码块进行解交织处理，获得解交织码块；
所述处理器，还用于对所述解交织码块进行译码处理，获得译码码块；
所述处理器，还用于对所述译码码块进行校验，获得校验码块。
本发明实施例提供的基于不等差错保护的数据传输方法、装置和设备，通过根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明基于不等差错保护的数据传输方法的应用场景的架构示意图；
图2为本发明基于不等差错保护的数据传输方法实施例一的流程示意图；
图3为本发明基于不等差错保护的数据传输方法实施例二的流程示意图；
图4为码块分段的结果示意图；
图5为LTE网络中的速率匹配过程；
图6为码块级联过程的示意图；
图7为本发明基于不等差错保护的数据传输方法实施例三的流程示意图；
图8为本发明基于不等差错保护的数据传输方法实施例四的流程示意图；
图9为本发明基于不等差错保护的数据传输方法实施例五的流程示意图；
图10为本发明基于不等差错保护的数据传输方法实施例六的流程示意 图；
图11为分段处理示意图；
图12为交织处理的示意图；
图13为本发明基于不等差错保护的数据传输方法实施例七的流程示意图；
图14为本发明基于不等差错保护的数据传输装置实施例一的结构示意图；
图15为本发明基于不等差错保护的数据传输装置实施例二的结构示意图；
图16为本发明基于不等差错保护的数据传输装置实施例三的结构示意图；
图17为本发明基于不等差错保护的数据传输装置实施例四的结构示意图；
图18为本发明基于不等差错保护的数据传输装置实施例五的结构示意图；
图19为本发明基于不等差错保护的数据传输装置实施例六的结构示意图；
图20为本发明基于不等差错保护的数据传输装置实施例七的结构示意图；
图21为本发明基于不等差错保护的数据传输装置实施例八的结构示意图；
图22为本发明基于不等差错保护的数据传输装置实施例九的结构示意图；
图23为本发明基于不等差错保护的数据传输装置实施例十的结构示意图；
图24为本发明基站实施例一的结构示意图；
图25为本发明基站实施例二的结构示意图；
图26为本发明终端设备实施例一的结构示意图；
图27为本发明终端设备实施例二的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本发明基于不等差错保护的数据传输方法的应用场景的架构示意图，如图1所示，该基于不等差错保护的数据传输方法应用于LTE移动通信系统中，其具体应用于LTE移动通信系统中的各类视频业务中，该系统包括基站11和终端设备12，其中，基站11主要用于物理下行共享信道(Physical Downlink Shared Channel；简称：PDSCH)下行数据的传输；而终端设备12包括手机，智能终端，多媒体设备，流媒体设备等，其负责对接收到的编码信号进行译码得到与之匹配的重构信号。
以下结合几个实施例进行详细描述：
图2为本发明基于不等差错保护的数据传输方法实施例一的流程示意图。本发明实施例提供了一种基于不等差错保护的数据传输方法，该方法可以由任意执行基于不等差错保护的数据传输方法的装置来执行，该装置可以通过软件和/或硬件实现。本实施例中，该装置可以集成在基站中。
在上述图1所示系统架构的基础上，如图2所示，本实施例的方法可以包括：
步骤201、根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块。
在本实施例中，当基站接收到终端设备发送的用于请求接收视频数据的消息时，基站会将SVC视频源数据以字节为单位进行打包，即以介质访问控制(Media Access Control；简称：MAC)协议数据单元(Protocol Data Unit；简称：PDU)的格式进行相关处理，在具体的实现过程中，首先在MAC PDU的尾部添加L位比特校验位，以验证MAC PDU是否正确，例如：可以采用CRC校验的方式，在MAC PDU尾部添加24比特的校验位，添加校验位之后，若MAC PDU的长度大于码块大小的最大值6144，则需要根据星座图中的符号位数确定出分段数量之后，根据该分段数量对数据对应的码块进行分段，并对每一个分段后的码块进行循环冗余校验码(Cyclic Redundancy Check；简称：CRC)冗余添加。
步骤202、对经信道编码的分段码块进行速率匹配，获得输出码块。
在本实施例中，基站将码块进行分段，获得分段码块之后，会对该分段码块进行编码，在LTE系统中，一般采用Turbo编码方式，编码之后，会获得一路系统位码块和两路校验位码块，并分别将三路码块通过子交织器进行交织和比特收集处理，以将三路码块合成为一路，然后对该一路码块进行速率匹配，以获得输出码块。
步骤203、根据星座图中的符号位数，对输出码块进行级联，获得级联码块。
在本实施例中，根据星座图中的符号位数，将得到的输出码块进行拼接，以完成码块的级联，获得级联码块。
步骤204、将级联码块发送到终端设备。
在本实施例中，基站将级联码块发送到终端设备，以供终端设备对该级联码块进行码块拆分和译码处理，获得MAC PDU数据包。
本发明实施例提供的基于不等差错保护的数据传输方法，通过根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
图3为本发明基于不等差错保护的数据传输方法实施例二的流程示意图，本实施例在图2所示实施例的基础上，对码块进行分段及对输出码块进行级联的方式，作详细说明。
在上述图1所示系统架构的基础上，如图3所示，本实施例的方法可以包括：
步骤301、根据星座图中的符号位数Qm，确定分段数量；分段数量为Qm/2的整数倍。
在本实施例中，根据公式
Figure PCTCN2015084374-appb-000004
确定分段数量C，其中，Z表示码块大小的最大值，一般为6144，B表示码块对应的输入比特流的大 小，L表示CRC校验位的大小，
Figure PCTCN2015084374-appb-000005
表示向上取整，例如：若根据计算出的值为3.5，则向上取整之后的结果为4。根据上述公式确定出的分段数量C为Qm/2的整数倍，其中，星座图中的符号位数Qm根据MCS选择的调制方式确定，例如：在16正交振幅调制(Quadrature Amplitude Modulation；简称：QAM)时，Qm为4，在64QAM时，Qm为6，在256QAM时，Qm为8等。
步骤302、根据分段数量，将码块进行分段。
在本实施例中，当确定出分段数量之后，根据该分段数量，将数据对应的码块进行分段。采用根据星座图中的符号位数Qm，确定分段数量，并根据分段数量对码块进行分段的方式，可以保证码块中重要数据映射到星座图中的MSB的位置，不重要的数据映射到星座图中的LSB的位置，从而可以根据数据的重要性进行不等误差保护。图4为码块分段的结果示意图，如图4所示，SVC将一个视频序列编码成包含多个相互依存的层的数据流，在实际视频服务系统中根据用户的特定需求，从该流中提取出相应数量的子层(子码流)，其中最重要的是基层(Base layer；简称：BL)，其它的为增强层(Enhancement layer；ELs(1～N))，所有ELs必须依赖BL解码，高层的EL需依赖低层的EL，因此，BL的重要性高于EL，低层的EL的重要性高于高层的EL。就整体的所有码块来说，在码块分段时，重要的数据排到顺序靠前的码块中，次重要的数据排在顺序靠后的码块中。
需要进行说明的是，当码块数大于3时，需要进行码块重排。在具体实现过程中，若为n*Qm/2块，则前n*Qm/6块分别排到第(1+k*Qm/2)处，中间n*Qm/6块分别排到第(2+k*Qm/2)处，后n*Qm/6块分别排到第(3+k*Qm/2)处，其中，n和k均为大于或等于零的整数。
步骤303、对分段码块进行编码，获得编码码块。
在本实施例中，对分段码块进行Turbo编码，其中，Turbo主要由并行级联卷积码，两个8状态子编码器和一个Turbo码内交织器组成，因此，Turbo编码后的结果分为三路，第一路是系统位，后两路是校验位，在编码开始时，8状态子编码器的移位寄存器的初始值为0。
Turbo码内交织器最主要的功能是利用随机化的思想将两个相互独立的短码组合而成一个长的随机码，因为长码的性能可以逼近香农极限。另外， 交织器可以用来分散突发错误，交织器还可以用来打破低重量的输入序列模式，从而增大输出码字的最小汉明距离或者说减少低重量输出码字的数量。
步骤304、对编码码块通过交织器进行交织处理，获得交织码块。
在本实施例中，假设输入交织器的比特流为
Figure PCTCN2015084374-appb-000006
其中，D为输入比特数目，交织器中矩阵的列数为
Figure PCTCN2015084374-appb-000007
且从左到右编号依次为0,1,2,…,
Figure PCTCN2015084374-appb-000008
另外，为了避免错误，提高交织的正确性，矩阵的大小需大于或等于D，即
Figure PCTCN2015084374-appb-000009
为矩阵的行数，因此，
Figure PCTCN2015084374-appb-000010
的值即为的最小整数值，矩阵的行从上到下编号依次为0,1,2,…,
Figure PCTCN2015084374-appb-000012
由于
Figure PCTCN2015084374-appb-000013
因此，矩阵中需要包括一些填充比特，以进行比特填充，因此，矩阵中包括信息比特和填充比特，其中，信息比特为数据对应的比特，如果
Figure PCTCN2015084374-appb-000014
那么需要在矩阵中添加
Figure PCTCN2015084374-appb-000015
个虚假比特。
本实施例中以行进方式进入交织器进行说明，列进方式与之类似，此处不再赘述。在确定出填充比特的数量之后，向矩阵一行一行地输入比特序列
Figure PCTCN2015084374-appb-000016
k＝0,1,…,D-1。矩阵中前面ND–1项是添加的填充比特，具体形式如下：
Figure PCTCN2015084374-appb-000017
由于经过编码处理之后获得的结果有三路数据，相应地，需要三个交织器分别对这三路数据进行交织处理。在以上述矩阵的形式进入交织器之后，则三个交织器将分别对输入的矩阵进行相应的处理。
具体地，对第一路系统位来说，其交织方式为进行列置换，表一为列置换的形式：
表一
Figure PCTCN2015084374-appb-000018
如表一所示，将P(j)一一对应于表一中第二行第二列的数，比如：将原来的第1列置换为第16列，将原来的第2列置换为第8列等。变换后的矩阵为：
Figure PCTCN2015084374-appb-000019
其中，P(j)表示第j个变换列的原始位置列位置，例如：置换后的矩阵中yP(1)与原矩阵中的y16的比特相对应。
对第二路校验位来说，其交织方式为行进列出的形式，即一列一列的读出比特序列。
对第二路校验位来说，其输出比特可以表示为
Figure PCTCN2015084374-appb-000020
其中：
Figure PCTCN2015084374-appb-000021
k为大于或等于零的整数，π(k)和K∏可以根据以下公式进行计算：
Figure PCTCN2015084374-appb-000022
Figure PCTCN2015084374-appb-000023
步骤305、对交织码块进行速率匹配，获得输出码块。
在本实施例中，在进行速率匹配时，是以码块为单位进行，此时假设输入序列为wr0wr1…wr(3Tr-1)，首先根据以下公式计算出单个进程单个流的缓冲区大小NIR：
Figure PCTCN2015084374-appb-000024
其中，
Figure PCTCN2015084374-appb-000025
表示向下取整，Nsoft是指UE能够处理的数据最大缓存，KMIMO是由流的个数决定，取值1或2，MDL_HARQ指下行混合自动重传请求(Hybrid Automatic Repeat reQuest；简称：HARQ)进程的最大数量，Mlimit表示常数，其值为8，min(MDL_HARQ,Mlimit)是指有多少个HARQ进程。
然后根据公式(4)计算每一个码块的缓冲区的大小Ncb：
Figure PCTCN2015084374-appb-000026
其中，C是码块数，Kw为三路子交织器出来的比特流总大小。
计算出每一个码块的缓冲区大小后，根据公式(5)计算每个码块进行速率匹配后的输出长度Er：
Figure PCTCN2015084374-appb-000027
其中，γ＝G′modC，G′＝G/(NL·Qm)，r为0到C-1的整数，G是根据分配的可用RB资源所能传输的总比特数。
图5为LTE网络中的速率匹配过程，如图5所示，假设第r个码块，其缓冲区大小为Ncb,速率匹配的输出长度为Er。第一次发送为版本Rv0，如在接收端没有正确译码，则更换Rvid版本，直至接收端正确译码。
需要进行说明的时，由于在进行交织处理时，在矩阵中填充了填充比特，因此，在进行速率匹配时，如果发现是填充比特，则直接跳过，进行下一个比特的匹配，这样，避免了对填充比特进行速率匹配的现象，有效节省了带宽。
步骤306、将每Qm/2个输出码块作为一个码块组，根据数据的重要性，将每个码块组内的输出码块进行排序。
在本实施例中，为了保证按照数据的重要程度把比特映射到每个星座符号的对应位置上，将每Qm/2个输出码块作为一个码块组，并将重要性依次递减的数据分别放在一个码块组。
步骤307、针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
在本实施例中，在进行码块级联时，以码块组为单位，针对每个码块组，按照排序后的输出码块进行扫描，依次从每个输出码块中取一个比特，这样，每取一次，可以获得Qm/2个码块，由于每Qm个比特对应一个星座图中的符号，因此，需要连续取两次，以获得Qm个比特。当取完一个码块组后，接着取后面的码块组，按这种方式取出每个码块中的比特后，在进行星座映射时，便 会按照数据的重要程度，将不同的数据映射到相应的位置。
以64QAM为例进行说明，图6为码块级联过程的示意图，如图6所示，在码块分段时，经过计算，码块数被设置为3的倍数，码块C3k中的数据比码块C3k+1中的数据重要，C3k+1中的数据比C3k+2中的数据重要，C3k、C3k+1、C3k+2(k为整数)构成一个码块组，在码块级联时，依次从C3k、C3k+1、C3k+2(k为整数)中选取一个比特，每取2次构成一个64QAM符号，这样就会按顺序映射到64QAM符号上对应的MSBs、中间位(Middle bites；简称：MIDs)和LSBs的位置。
步骤308、将级联码块进行数据调制，获得调制数据。
步骤309、对调制数据进行数-模转换，获得模拟数据。
步骤310、将模拟数据发送到终端设备。
本发明实施例提供的基于不等差错保护的数据传输方法，通过根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，将视频数据的重要性按码块区分，提高了可操作性。
图7为本发明基于不等差错保护的数据传输方法实施例三的流程示意图。本发明实施例提供了一种基于不等差错保护的数据传输方法，该方法可以由任意执行基于不等差错保护的数据传输方法的装置来执行，该装置可以通过软件和/或硬件实现。本实施例中，该装置可以集成在终端设备中。
在上述图1所示系统架构的基础上，如图7所示，本实施例的方法可以包括：
步骤701、接收基站发送的级联码块；该级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据星座图中的符号位数，对输出码块进行级联之后得到的。
在本实施例中，当基站接收到终端设备发送的用于请求接收数据的消息 时，基站会将SVC视频源数据以以字节为单位进行打包，即以介质访问控制(Media Access Control；简称：MAC)协议数据单元(Protocol Data Unit；简称：PDU)的格式进行相关处理，在具体的实现过程中，首先在MAC PDU的尾部添加L位比特校验位，以验证MAC PDU是否正确，例如：可以采用CRC校验的方式，在MAC PDU尾部添加24比特的校验位，添加校验位之后，若MAC PDU的长度大于码块的最大值6144，则需要根据星座图中的符号位数确定出分段数量之后，根据该分段数量对数据对应的码块进行分段，并对每一个分段后的码块进行循环冗余校验码(Cyclic Redundancy Check；简称：CRC)冗余添加。
基站将码块进行分段，获得分段码块之后，会对该分段码块进行编码，在LTE系统中，一般采用Turbo编码方式，编码之后，会获得一路系统位码块和两路校验位码块，分别将三路码块通过子交织器进行交织和比特收集处理，以将三路码块合成为一路，然后对该一路码块进行速率匹配，以获得输出码块。基站根据星座图中的符号位数，将得到的输出码块进行拼接，以完成码块的级联，获得级联码块，并将该级联码块发送到终端设备。
步骤702、根据星座图中的符号位数，对级联码块进行码块拆分，获得拆分码块。
在本实施例中，由于基站在进行码块级联时，是根据星座图中的符号位数进行的，相应地，终端设备接收到基站发送的级联码块之后，也需要根据星座图中的符号位数进行码块的拆分，以获得拆分码块。
步骤703、对经信道译码的所述拆分码块进行码块级联，获得数据。
在本实施例中，终端设备在对经过译码后的拆分码块进行级联时，将各码块进行顺序拼接，以获得输出序列比特，即获得MAC PDU数据包。
本发明实施例提供的基于不等差错保护的数据传输方法，基站通过根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，由于终端设备根据星座图中的符 号位数对级联码块进行码块拆分，以获得与原始数据排列顺序相同的数据，实现了视频数据的不等误差保护。
图8为本发明基于不等差错保护的数据传输方法实施例四的流程示意图，本实施例在图7所示实施例的基础上，对级联码块进行码块拆分的方式，作详细说明。
在上述图1所示系统架构的基础上，如图8所示，本实施例的方法可以包括：
步骤801、接收基站发送的级联码块；该级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据星座图中的符号位数，对输出码块进行级联之后得到的。
步骤802、将级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将获取的比特组成比特流。
在本实施例中，步骤802为步骤306与步骤307的逆操作，具体地，将收到的64QAM符号竖着进行排列，将第二个符号竖排后接在前一个符号上，后面依次排列，最后按行形成码块输出，这样，即可完成码块的拆分，将基站侧按数据重要性映射在星座图中相应位置的数据进行还原。
步骤803、对拆分码块通过解交织器进行解交织处理，获得解交织码块。
步骤803为步骤304的逆操作。
步骤804、对解交织码块进行译码处理，获得译码码块。
步骤804为步骤303的逆操作。
步骤805、对译码码块依次进行CRC校验及码块级联处理，获得数据。
本实施例中，对CRC校验后的码块进行级联时，将码块按照顺序进行拼接，以获得MAC PDU数据包。
本发明实施例提供的基于不等差错保护的数据传输方法，由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，终端设备通过根据星座图中的符号位数，对基站发送的级联码块进行码块拆分，并将获得的拆分码块进行码块级联，可将映射在不同位置的码块进行拆分，获得数据，提高了通信系统的可扩展性。
图9为本发明基于不等差错保护的数据传输方法实施例五的流程示意图。本发明实施例提供了一种基于不等差错保护的数据传输方法，该方法可以由任意执行基于不等差错保护的数据传输方法的装置来执行，该装置可以通过软件和/或硬件实现。本实施例中，该装置可以集成在基站中。
在上述图1所示系统架构的基础上，如图9所示，本实施例的方法可以包括：
步骤901、根据预设参数将数据对应的码块进行分段，获得分段码块。
在本实施例中，在16QAM或者256QAM的情形下，Qm/2的值分别为2和4，由于输入子交织器的比特流长度Dr需满足是2或4的整数倍这一条件，因从Turbo编码器输出时，每路比特要添加4比特的尾比特，即Dr＝Kr+4，Kr表示输入Turbo编码器时第r个码块的长度，Dr表示从Turbo编码器输出时第r个码块的长度。根据现有协议，Turbo码块长度满足这一条件，因此码块分段的参数计算方法与现有技术相同。
然而在64QAM时，为了使码块经过子交织器列置换后，不会影响映射到星座符号上MSBs、MIDs和LSBs的顺序，码块长度需满足(Kr+4)mod3＝0这一条件，因此，需要根据预设参数确定出分段数量，并对数据对应的码块进行分段。
步骤902、对分段码块进行编码处理，获得编码码块，编码码块包括系统位码块。
步骤902与步骤303类似，此处不再赘述。
步骤903、根据星座图中的符号位数，对系统位码块进行交织处理，获得交织码块。
在本实施例中，对分段码块进行编码处理之后，会获得系统位码块和两路校验位码块，针对两路校验位码块的交织处理方式，可以参照步骤304，此处不再赘述。
针对系统位码块，可以根据星座图中的符号位数进行处理，以获得交织码块。
步骤904、对交织码块进行级联，获得级联码块，并将级联码块发送到终端设备。
在本实施例中，将获得的交织码块进行顺序拼接，以获得级联码块，并 将该级联码块依次进行数据调制和数-模转换，获得模拟数据，将该模拟数据发送到终端设备，以供终端设备进行译码，获得数据。
本发明实施例提供的基于不等差错保护的数据传输方法，通过根据预设参数将视频数据对应的码块进行分段，获得分段码块，对分段码块进行编码处理，获得编码码块，编码码块包括系统位码块，根据星座图中的符号位数，对系统位码块进行交织处理，获得交织码块，对交织码块进行级联，获得级联码块，并将级联码块发送到终端设备。由于基站根据星座图中的符号位数对系统位码块进行交织处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
图10为本发明基于不等差错保护的数据传输方法实施例六的流程示意图，本实施例在图9所示实施例的基础上，对码块进行分段及对系统位码块进行交织处理的方式，作详细说明。
在上述图1所示系统架构的基础上，如图10所示，本实施例的方法可以包括：
步骤1001、根据预设参数确定分段数量、分段码块长度及第一填充比特数量；填充比特为对码块进行比特填充时使用的比特。
在本实施例中，由于在64QAM时，码块长度需满足(Kr+4)mod3＝0这一条件，因此，需要将表二中符合该条件的Kr值选出来形成一张新的64QAM码块长度表，其中，表二为原码块分段长度和Turbo码内交织器参数(部分)，表三为修改后的码块分段长度和Turbo码内交织器参数(部分)：
表二
i Ki f1 f2 i Ki f1 f2 i Ki f1 f2 i Ki f1 f2
3 56 19 42 48 416 25 52 101 1184 19 74 142 3200 111 240
4 80 11 20 51 440 91 110 106 1280 199 240 145 3392 51 212
7 104 7 26 54 464 247 58 109 1376 21 86 148 3584 57 336
10 128 15 32 57 488 91 122 112 1472 45 92 151 3776 179 236
13 152 9 38 60 512 31 64 115 1568 13 28 154 3968 375 248
16 176 21 44 63 560 227 420 118 1664 183 104 157 4160 33 130
19 200 13 50 66 608 37 76 121 1760 27 110 160 4352 477 408
22 224 27 56 69 656 185 82 124 1856 57 116 163 4544 357 142
表三
i Ki f1 f2 i Ki f1 f2 i Ki f1 f2 i Ki f1 f2
3 56 19 42 48 416 25 52 101 1184 19 74 142 3200 111 240
4 80 11 20 51 440 91 110 106 1280 199 240 145 3392 51 212
7 104 7 26 54 464 247 58 109 1376 21 86 148 3584 57 336
10 128 15 32 57 488 91 122 112 1472 45 92 151 3776 179 236
13 152 9 38 60 512 31 64 115 1568 13 28 154 3968 375 248
16 176 21 44 63 560 227 420 118 1664 183 104 157 4160 33 130
19 200 13 50 66 608 37 76 121 1760 27 110 160 4352 477 408
22 224 27 56 69 656 185 82 124 1856 57 116 163 4544 357 142
在计算码块总数和码块长度时，根据现有的方法，以表三为依据，确定出C+、C-、K+、K-和F，其中，K+和K-表示码块长度，C+表示码块长度为K+的码块的数量，C-表示码块长度为K-的码块的数量，F为填充比特的数量。
步骤1002、根据分段数量、分段码块长度及第一填充比特数量，对码块进行比特填充。
在本实施例中，图11为分段处理示意图，如图11所示，MAC PDU数据包在进行CRC校验后，在进行分段处理时，在矩阵中添加一个K+行C列的交织器，矩阵的左上角的(K+-K-)*C-大小的子矩阵放置填充比特，第一列接着再放置F个填充比特，MAC PDU序列按行输入交织器中，按列输出，即获得C个符合重要数据在前的排放顺序的码块。
步骤1003、对分段码块进行编码处理，获得编码码块，该编码码块包括系统位码块。
步骤1004、根据星座图中的符号位数，确定交织器的行数，并根据交织器的行数和预设的交织器的列数，确定第二填充比特的数量。
在本实施例中，子交织器的行数需为
Figure PCTCN2015084374-appb-000028
和
Figure PCTCN2015084374-appb-000029
的最小整数值，其中，
Figure PCTCN2015084374-appb-000030
为子交织器的行数，D为输入比特数目。另外，第二填充比特的数量
Figure PCTCN2015084374-appb-000031
其中，
Figure PCTCN2015084374-appb-000032
为交织器的列数，一般取值为32。
步骤1005、根据第二填充比特的数量及星座图中的符号位数分别放置填充比特和信息比特；信息比特为数据对应的比特。
图12为交织处理的示意图，如图12所示，一般
Figure PCTCN2015084374-appb-000033
因此， 将填充比特X放置在矩阵左上角的(Qm/2)*(2ND/Qm)的子矩阵中。对于信息比特的放置，可以从第一行开始，每隔Qm/2行放置一个信息比特，放置完接着从第二行开始，再每隔Qm/2行进行放置，循环执行此操作，直至从第Qm/2行开始放置，以放置完所有的信息比特。由此可见，每隔Qm/2行放置码块数据，是为了让最重要的数据被放置在Qm/2个比特一列数据的第一行，次重要的数据放置在中间行，最不重要的数据放在最后一行，这样放置后，即便经过列置换，比特流按列读出后，每Qm/2个比特一组进行映射仍能对应到星座符号中的MSBs、MIDs和LSBs上面。
步骤1006、对交织码块进行级联，获得级联码块，并将级联码块发送到终端设备。
本发明实施例提供的基于不等差错保护的数据传输方法，通过根据预设参数将数据对应的码块进行分段，获得分段码块，对分段码块进行编码处理，获得编码码块，编码码块包括系统位码块，根据星座图中的符号位数，对系统位码块进行交织处理，获得交织码块，对交织码块进行级联，获得级联码块，并将级联码块发送到终端设备。由于基站根据星座图中的符号位数对系统位码块进行交织处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，将数据的重要性按码块区分，可以适应任意的调制方式，提高了系统的可扩展性。
图13为本发明基于不等差错保护的数据传输方法实施例七的流程示意图。本发明实施例提供了一种基于不等差错保护的数据传输方法，该方法可以由任意执行基于不等差错保护的数据传输方法的装置来执行，该装置可以通过软件和/或硬件实现。本实施例中，该装置可以集成在终端设备中。
在上述图1所示系统架构的基础上，如图13所示，本实施例的方法可以包括：
步骤1301、接收基站发送的级联码块；该级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，并根据星座图中的符号位数，对输出码块进行级联之后得到的。
在本实施例中，基站为了使码块经过子交织器列置换后，不会影响映射 到星座符号上MSBs、MIDs和LSBs的顺序，码块长度需满足(Kr+4)mod3＝0这一条件，因此，需要根据预设参数确定出分段数量，并对数据对应的码块进行分段。分段完成后，对获得的分段码块进行编码，以得到编码码块，该编码码块中包括系统位码块。再根据星座图中的符号位数，对系统位码块进行交织处理，获得交织码块，并对交织码块进行级联，以得到级联码块，并将该级联码块发送到终端设备。
步骤1302、对级联码块进行LTE数据接收处理，获得校验码块。
在本实施例中，在接收到基站发送的级联码块之后，对该级联码块进行码块拆分，并依次对得到的拆分码块进行解交织处理、译码处理及CRC校验，以获得校验码块。
步骤1303、对校验码块进行列进行出的码块级联，获得级联码块。
在本实施例中，将校验码块根据列进行出的原则进行级联，以形成BL+EL的形式，保证了级联后的数据与原始的MAC PDU数据的顺序保持一致。
本发明实施例提供的基于不等差错保护的数据传输方法，通过接收基站发送的级联码块，并对该级联码块进行LTE数据接收处理，获得校验码块，对该校验码块进行行进列出的码块级联，获得级联码块。由于基站根据星座图中的符号位数对系统位码块进行交织处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，终端设备对校验码块进行列进行出的码块级联，保证了级联后的数据与原始的MAC PDU数据的顺序保持一致，实现了对视频数据的不等误差保护，提高了视频的质量。
图14为本发明基于不等差错保护的数据传输装置实施例一的结构示意图，如图14所示，本发明实施例提供的基于不等差错保护的数据传输装置包括分段模块11、匹配模块12、级联模块13和发送模块14。
其中，分段模块11用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；匹配模块12用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；级联模块13用于根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；发送模块14用于将所述级联码块发送到终端设备。
本发明实施例提供的基于不等差错保护的数据传输装置，通过根据星座 图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
图15为本发明基于不等差错保护的数据传输装置实施例二的结构示意图，如图15所示，本实施例在图14所示实施例的基础上，所述分段模块11包括：
确定单元111用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
分段单元112用于根据所述分段数量，将所述码块进行分段。
可选地，所述确定单元111具体用于：
根据公式
Figure PCTCN2015084374-appb-000034
确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图16为本发明基于不等差错保护的数据传输装置实施例三的结构示意图，如图16所示，本实施例在图15所示实施例的基础上，所述级联模块13包括：
排序单元131用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
获取单元132用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原 理和技术效果类似，此处不再赘述。
图17为本发明基于不等差错保护的数据传输装置实施例四的结构示意图，如图17所示，本实施例在上述各实施例的基础上，所述匹配模块12包括：
编码单元121用于对所述分段码块进行编码，获得编码码块；
交织单元122用于对所述编码码块通过交织器进行交织处理，获得交织码块；
匹配单元123用于对所述交织码块进行速率匹配，获得所述输出码块。
可选地，所述装置还包括：
调制模块15用于将所述级联码块进行数据调制，获得调制数据；
转换模块16用于对所述调制数据进行数-模转换，获得模拟数据；
所述发送模块14还用于将所述模拟数据发送到所述终端设备。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图18为本发明基于不等差错保护的数据传输装置实施例五的结构示意图，如图18所示，本发明实施例提供的基于不等差错保护的数据传输装置包括分段模块21、编码模块22、交织模块23、级联模块24和发送模块25。
其中，分段模块21用于根据预设参数将数据对应的码块进行分段，获得分段码块；
编码模块22用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
交织模块23用于根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
级联模块24用于对所述交织码块进行级联，获得级联码块；
发送模块25用于将所述级联码块发送到终端设备。
本发明实施例提供的基于不等差错保护的数据传输装置，通过根据预设参数将数据对应的码块进行分段，获得分段码块，对分段码块进行编码处理，获得编码码块，编码码块包括系统位码块，根据星座图中的符号位数，对系统位码块进行交织处理，获得交织码块，对交织码块进行级联，获得级联码 块，并将级联码块发送到终端设备。由于基站根据星座图中的符号位数对系统位码块进行交织处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
图19为本发明基于不等差错保护的数据传输装置实施例六的结构示意图，如图19所示，本实施例在图18所示实施例的基础上，所述分段模块21包括：
第一确定单元211用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
填充单元212用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
可选地，所述交织模块23包括：
第二确定单元231用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
放置单元232用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图20为本发明基于不等差错保护的数据传输装置实施例七的结构示意图，如图20所示，本发明实施例提供的基于不等差错保护的数据传输装置包括接收模块31、拆分模块32和级联模块33。
其中，接收模块31用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；拆分模块32用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；级联模块33用于对经信道译码的所述拆分码块进行码块级联，获得所述数据。
本发明实施例提供的基于不等差错保护的数据传输装置，基站通过根据 星座图中的符号位数，将数据对应的码块进行分段，获得分段码块，对经信道编码的分段码块进行速率匹配，获得输出码块，并根据星座图中的符号位数，对输出码块进行级联，获得级联码块，将级联码块发送到终端设备。由于基站根据星座图中的符号位数对码块进行分段和级联处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。另外，由于终端设备根据星座图中的符号位数对级联码块进行码块拆分，以获得与原始数据排列顺序相同的数据，实现了数据的不等误差保护。
可选地，所述拆分模块32具体用于将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
图21为本发明基于不等差错保护的数据传输装置实施例八的结构示意图，如图21所示，本实施例在上述各实施例的基础上，所述级联模块33包括：
解交织单元331用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
译码单元332用于对所述解交织码块进行译码处理，获得译码码块；
处理单元333用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图22为本发明基于不等差错保护的数据传输装置实施例九的结构示意图，如图22所示，本发明实施例提供的基于不等差错保护的数据传输装置包括接收模块41、处理模块42和级联模块43。
其中，接收模块41用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；处理模块42用于对所述级联码块进行LTE数据接收处理， 获得校验码块；级联模块43用于对所述校验码块进行行进列出的码块级联，获得级联码块。
本发明实施例提供的基于不等差错保护的数据传输装置，通过接收基站发送的级联码块，并对该级联码块进行LTE数据接收处理，获得校验码块，对该校验码块进行行进列出的码块级联，获得级联码块。由于基站根据星座图中的符号位数对系统位码块进行交织处理，使得数据中的重要数据映射到星座图中误比特率更小的位置上，从而在LTE系统中也可以达到对数据的不等误差保护的目的。
图23为本发明基于不等差错保护的数据传输装置实施例十的结构示意图，如图23所示，本实施例在图22所示实施例的基础上，所述处理模块42包括：
拆分单元421用于对所述级联码块进行码块拆分，获得拆分码块；
解交织单元422用于对所述拆分码块进行解交织处理，获得解交织码块；
译码单元423用于对所述解交织码块进行译码处理，获得译码码块；
校验单元424用于对所述译码码块进行校验，获得校验码块。
本实施例的基于不等差错保护的数据传输装置，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图24为本发明基站实施例一的结构示意图，如图24所示，本发明实施例提供的基站包括处理器51和发送器52。
其中，处理器51用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
所述处理器51还用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；
所述处理器51还用于根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
发送器52用于将所述级联码块发送到终端设备。
本实施例提供的基站，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器51还用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
所述处理器51还用于根据所述分段数量，将所述码块进行分段。
可选地，所述处理器51还用于根据公式
Figure PCTCN2015084374-appb-000035
确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
可选地，所述处理器51还用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
所述处理器51还用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
可选地，所述处理器51还用于对所述分段码块进行编码，获得编码码块；
所述处理器51还用于对所述编码码块通过交织器进行交织处理，获得交织码块；
所述处理器51还用于对所述交织码块进行速率匹配，获得所述输出码块。
可选地，所述处理器51还用于将所述级联码块进行数据调制，获得调制数据；
所述处理器51还用于对所述调制数据进行数-模转换，获得模拟数据；
所述发送器52还用于将所述模拟数据发送到所述终端设备。
本实施例提供的基站，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图25为本发明基站实施例二的结构示意图，如图25所示，本发明实施例提供的基站包括处理器61和发送器62。
其中，处理器61用于根据预设参数将数据对应的码块进行分段，获得分段码块；
所述处理器61还用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
所述处理器61还用于根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
所述处理器61还用于对所述交织码块进行级联，获得级联码块；
发送器62用于将所述级联码块发送到终端设备。
本实施例提供的基站，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器61还用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
所述处理器61还用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
可选地，所述处理器61还用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
所述处理器61还用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
本实施例提供的基站，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图26为本发明终端设备实施例一的结构示意图，如图26所示，本发明实施例提供的终端设备包括接收器71和处理器72。
其中，接收器71用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
处理器72用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
所述处理器72还用于对经信道译码的所述拆分码块进行码块级联，获得 所述数据。
本实施例提供的终端设备，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器72还用于将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
可选地，所述处理器72还用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
所述处理器72还用于对所述解交织码块进行译码处理，获得译码码块；
所述处理器72还用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
本实施例提供的终端设备，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
图27为本发明终端设备实施例二的结构示意图，如图27所示，本发明实施例提供的终端设备包括接收器81和处理器82。
接收器81用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
处理器82用于对所述级联码块进行LTE数据接收处理，获得校验码块；
所述处理器82还用于对所述校验码块进行行进列出的码块级联，获得级联码块。
本实施例提供的终端设备，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
可选地，所述处理器82还用于对所述级联码块进行码块拆分，获得拆分码块；
所述处理器82还用于对所述拆分码块进行解交织处理，获得解交织码块；
所述处理器82还用于对所述解交织码块进行译码处理，获得译码码块；
所述处理器82还用于对所述译码码块进行校验，获得校验码块。
本实施例提供的终端设备，可以用于执行本发明任意实施例所提供的基于不等差错保护的数据传输方法的技术方案，其实现原理和技术效果类似，此处不再赘述。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的 全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (42)

  1. 一种基于不等差错保护的数据传输方法，其特征在于，包括：
    根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
    对经信道编码的所述分段码块进行速率匹配，获得输出码块；
    根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
    将所述级联码块发送到终端设备。
  2. 根据权利要求1所述的方法，其特征在于，所述根据星座图中的符号位数，将数据对应的码块进行分段，包括：
    根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
    根据所述分段数量，将所述码块进行分段。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述星座图中的符号位数Qm，确定分段数量，包括：
    根据公式
    Figure PCTCN2015084374-appb-100001
    确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
  4. 根据权利要求2或3所述的方法，其特征在于，根据所述星座图中的符号位数，对所述输出码块进行级联，包括：
    将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
    针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述对经信道编码的所述分段码块进行速率匹配，包括：
    对所述分段码块进行编码，获得编码码块；
    对所述编码码块通过交织器进行交织处理，获得交织码块；
    对所述交织码块进行速率匹配，获得所述输出码块。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述将所述级联 码块发送到终端设备，包括：
    将所述级联码块进行数据调制，获得调制数据；
    对所述调制数据进行数-模转换，获得模拟数据；
    将所述模拟数据发送到所述终端设备。
  7. 一种基于不等差错保护的数据传输方法，其特征在于，包括：
    根据预设参数将数据对应的码块进行分段，获得分段码块；
    对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
    根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
    对所述交织码块进行级联，获得级联码块，并将所述级联码块发送到终端设备。
  8. 根据权利要求7所述的方法，其特征在于，所述根据预设参数将数据对应的码块进行分段，包括：
    根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
    根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
  9. 根据权利要求8所述的方法，其特征在于，所述根据星座图中的符号位数，对所述系统位码块进行交织处理，包括：
    根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
    根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
  10. 一种基于不等差错保护的数据传输方法，其特征在于，包括：
    接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
    根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆 分码块；
    对经信道译码的所述拆分码块进行码块级联，获得所述数据。
  11. 根据权利要求10所述的方法，其特征在于，所述根据所述星座图中的符号位数，对所述级联码块进行码块拆分，包括：
    将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
  12. 根据权利要求10或11所述的方法，其特征在于，所述对经信道译码的所述拆分码块进行码块级联，包括：
    对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
    对所述解交织码块进行译码处理，获得译码码块；
    对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
  13. 一种基于不等差错保护的数据传输方法，其特征在于，包括：
    接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
    对所述级联码块进行LTE数据接收处理，获得校验码块；
    对所述校验码块进行行进列出的码块级联，获得级联码块。
  14. 根据权利要求13所述的方法，其特征在于，所述对所述级联码块进行LTE数据接收处理，包括：
    对所述级联码块进行码块拆分，获得拆分码块；
    对所述拆分码块进行解交织处理，获得解交织码块；
    对所述解交织码块进行译码处理，获得译码码块；
    对所述译码码块进行校验，获得校验码块。
  15. 一种基于不等差错保护的数据传输装置，其特征在于，包括：
    分段模块，用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
    匹配模块，用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；
    级联模块，用于根据所述星座图中的符号位数，对所述输出码块进行级 联，获得级联码块；
    发送模块，用于将所述级联码块发送到终端设备。
  16. 根据权利要求15所述的装置，其特征在于，所述分段模块包括：
    确定单元，用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
    分段单元，用于根据所述分段数量，将所述码块进行分段。
  17. 根据权利要求16所述的装置，其特征在于，所述确定单元，具体用于：
    根据公式
    Figure PCTCN2015084374-appb-100002
    确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
  18. 根据权利要求16或17所述的装置，其特征在于，所述级联模块包括：
    排序单元，用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
    获取单元，用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
  19. 根据权利要求15-18任一项所述的装置，其特征在于，所述匹配模块包括：
    编码单元，用于对所述分段码块进行编码，获得编码码块；
    交织单元，用于对所述编码码块通过交织器进行交织处理，获得交织码块；
    匹配单元，用于对所述交织码块进行速率匹配，获得所述输出码块。
  20. 根据权利要求15-19任一项所述的装置，其特征在于，所述装置还包括：
    调制模块，用于将所述级联码块进行数据调制，获得调制数据；
    转换模块，用于对所述调制数据进行数-模转换，获得模拟数据；
    所述发送模块，还用于将所述模拟数据发送到所述终端设备。
  21. 一种基于不等差错保护的数据传输装置，其特征在于，包括：
    分段模块，用于根据预设参数将数据对应的码块进行分段，获得分段码块；
    编码模块，用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
    交织模块，用于根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块；
    级联模块，用于对所述交织码块进行级联，获得级联码块；
    发送模块，用于将所述级联码块发送到终端设备。
  22. 根据权利要求21所述的装置，其特征在于，所述分段模块包括：
    第一确定单元，用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
    填充单元，用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
  23. 根据权利要求22所述的装置，其特征在于，所述交织模块包括：
    第二确定单元，用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
    放置单元，用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
  24. 一种基于不等差错保护的数据传输装置，其特征在于，包括：
    接收模块，用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
    拆分模块，用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
    级联模块，用于对经信道译码的所述拆分码块进行码块级联，获得所述数据。
  25. 根据权利要求24所述的装置，其特征在于，所述拆分模块具体用于 将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
  26. 根据权利要求24或25所述的装置，其特征在于，所述级联模块包括：
    解交织单元，用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
    译码单元，用于对所述解交织码块进行译码处理，获得译码码块；
    处理单元，用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
  27. 一种基于不等差错保护的数据传输装置，其特征在于，包括：
    接收模块，用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
    处理模块，用于对所述级联码块进行LTE数据接收处理，获得校验码块；
    级联模块，用于对所述校验码块进行行进列出的码块级联，获得级联码块。
  28. 根据权利要求27所述的装置，其特征在于，所述处理模块包括：
    拆分单元，用于对所述级联码块进行码块拆分，获得拆分码块；
    解交织单元，用于对所述拆分码块进行解交织处理，获得解交织码块；
    译码单元，用于对所述解交织码块进行译码处理，获得译码码块；
    校验单元，用于对所述译码码块进行校验，获得校验码块。
  29. 一种基站，其特征在于，包括：
    处理器，用于根据星座图中的符号位数，将数据对应的码块进行分段，获得分段码块；
    所述处理器，还用于对经信道编码的所述分段码块进行速率匹配，获得输出码块；
    所述处理器，还用于根据所述星座图中的符号位数，对所述输出码块进行级联，获得级联码块；
    发送器，用于将所述级联码块发送到终端设备。
  30. 根据权利要求29所述的基站，其特征在于，所述处理器，还用于根据所述星座图中的符号位数Qm，确定分段数量；所述分段数量为Qm/2的整数倍；
    所述处理器，还用于根据所述分段数量，将所述码块进行分段。
  31. 根据权利要求30所述的基站，其特征在于，所述处理器，还用于根据公式确定所述分段数量C'，其中，Z表示码块大小的最大值，B表示所述码块对应的输入比特流的大小，L表示CRC校验位的大小。
  32. 根据权利要求30或31所述的基站，其特征在于，所述处理器，还用于将每Qm/2个所述输出码块作为一个码块组，根据所述数据的重要性，将每个码块组内的输出码块进行排序；
    所述处理器，还用于针对每个码块组，依次从排序后的各输出码块中分别获取一个比特，并将获得的比特级联，并重复执行此操作，直至将Qm个比特级联。
  33. 根据权利要求29-32任一项所述的基站，其特征在于，所述处理器，还用于对所述分段码块进行编码，获得编码码块；
    所述处理器，还用于对所述编码码块通过交织器进行交织处理，获得交织码块；
    所述处理器，还用于对所述交织码块进行速率匹配，获得所述输出码块。
  34. 根据权利要求29-33任一项所述的基站，其特征在于，所述处理器，还用于将所述级联码块进行数据调制，获得调制数据；
    所述处理器，还用于对所述调制数据进行数-模转换，获得模拟数据；
    所述发送器，还用于将所述模拟数据发送到所述终端设备。
  35. 一种基站，其特征在于，包括：
    处理器，用于根据预设参数将数据对应的码块进行分段，获得分段码块；
    所述处理器，还用于对所述分段码块进行编码处理，获得编码码块，所述编码码块包括系统位码块；
    所述处理器，还用于根据星座图中的符号位数，对所述系统位码块进行 交织处理，获得交织码块；
    所述处理器，还用于对所述交织码块进行级联，获得级联码块；
    发送器，用于将所述级联码块发送到终端设备。
  36. 根据权利要求35所述的基站，其特征在于，所述处理器，还用于根据所述预设参数确定分段数量、分段码块长度及第一填充比特数量；所述填充比特为对所述码块进行比特填充时使用的比特；
    所述处理器，还用于根据所述分段数量、所述分段码块长度及所述第一填充比特数量，对所述码块进行比特填充，以对码块进行分段。
  37. 根据权利要求36所述的基站，其特征在于，所述处理器，还用于根据所述星座图中的符号位数，确定交织器的行数，并根据所述交织器的行数和预设的所述交织器的列数，确定第二填充比特的数量；
    所述处理器，还用于根据所述第二填充比特的数量及所述星座图中的符号位数分别放置填充比特和信息比特；所述信息比特为所述数据对应的比特。
  38. 一种终端设备，其特征在于，包括：
    接收器，用于接收基站发送的级联码块；所述级联码块为根据星座图中的符号位数，将数据对应的码块进行分段，并对经信道编码的分段后的码块进行速率匹配，得到输出码块，根据所述星座图中的符号位数，对所述输出码块进行级联之后得到的；
    处理器，用于根据所述星座图中的符号位数，对所述级联码块进行码块拆分，获得拆分码块；
    所述处理器，还用于对经信道译码的所述拆分码块进行码块级联，获得所述数据。
  39. 根据权利要求38所述的终端设备，其特征在于，所述处理器，还用于将所述级联码块中的每Qm/2个比特作为一个比特组，并依次从每个比特组中获取一个比特，并将所述获取的比特组成比特流。
  40. 根据权利要求38或39所述的终端设备，其特征在于，所述处理器，还用于对所述拆分码块通过解交织器进行解交织处理，获得解交织码块；
    所述处理器，还用于对所述解交织码块进行译码处理，获得译码码块；
    所述处理器，还用于对所述译码码块依次进行CRC校验及码块级联处理，获得所述数据。
  41. 一种终端设备，其特征在于，包括：
    接收器，用于接收基站发送的级联码块；所述级联码块为根据预设参数将数据对应的码块进行分段，并对获得的分段码块进行编码处理，得到编码码块，所述编码码块包括系统位码块，根据星座图中的符号位数，对所述系统位码块进行交织处理，获得交织码块，并对所述交织码块进行级联之后得到的；
    处理器，用于对所述级联码块进行LTE数据接收处理，获得校验码块；
    所述处理器，还用于对所述校验码块进行行进列出的码块级联，获得级联码块。
  42. 根据权利要求41所述的终端设备，其特征在于，所述处理器，还用于对所述级联码块进行码块拆分，获得拆分码块；
    所述处理器，还用于对所述拆分码块进行解交织处理，获得解交织码块；
    所述处理器，还用于对所述解交织码块进行译码处理，获得译码码块；
    所述处理器，还用于对所述译码码块进行校验，获得校验码块。
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